The Khilafah is the general or overall leadership for all the Muslims in the world in order to establish the laws of the Islamic Shari’ah and to carry the da’wa of Islam to the world. It is the same as the Imamah, as the Imamah and Khilafah have the same meaning. Several saheeh ahadith mention them with the same meaning. Neither of the two terms has ever come with any meaning different from the other in any Shari’ah text i.e. the Qur’an or the Sunnah, as these two (sources) are the only Shari’ah sources. It is not compulsory to hold to the term of Khilafah or Imamah, but rather it is compulsory to hold to the meaning of the term.

Establishing the Khilafah is an obligation upon all Muslims in all regions of the world. Establishing it, like the performing of any obligation that Allah (swt) obliged upon Muslims, is an inevitable matter without choice or leniency in it. Negligence in performing it is one of the worst sins for which Allah (swt) punishes with the strictest of the punishments.

The evidence for establishing the Khilafah upon all Muslims (come from): The Qura'n, The Sunnah and Ijmaa as-Sahabah.

As for the Qura'n, Allah (swt) has ordered the Messenger (saw) to rule between Muslims by all that He (swt) revealed to him (saw), and His order (swt) to him was in a decisive manner. Allah (swt) addressed the Prophet (saw) saying:

And He (swt) said:

The speech of Allah (swt) to the Prophet (saw) is a speech to his Ummah unless there is evidence which limits the speech to him (saw). In this case there is no such evidence, so the address is to all the Muslims to establish the rule (hukm). The establishment of the Khalifah does not mean other than the establishment of the rule and the authority. Moreover, Allah (swt) made it obligatory upon Muslims to obey those in authority i.e. the ruler, which indicates that the existence of the one in authority is obligatory upon Muslims. Allah (swt) said:

Allah (swt) does not order obedience to someone who does not exist. This indicates that the existence of the person in authority is obligatory. When Allah (swt) commands obedience to those in authority then He (swt) is commanding their establishment. The result of establishing the ruler is the establishment of the Shari’ah rule (hukm shar’i) and the failure to establish it will result in neglecting the Shari’ah rule (hukm shar’i). Thus his existence is obligatory as the result of the failure to establish it is will be from the prohibited matters i.e. the neglect of the Shari’ah rule (hukm shar’i).

As for the Sunnah, Nafi‘ reported saying: Abdullah bin ‘Umar said to me that he heard the Prophet (saw) saying:

So the Prophet (saw) made it compulsory upon every Muslim to have a bay’ah on his neck, and described that whoever dies without a bay’ah on his neck that he dies a death of jahiliyyah. The bay’ah cannot be for anyone except the Khalifah. The Prophet (saw) made it obligatory upon every Muslim to have on his neck a bay’ah to a Khalifah, yet he did not make it an obligation upon every Muslim to give bay’ah to a Khalifah. The duty is the existence of a bay’ah on the neck of every eligible Muslim i.e. the existence of a Khalifah who accordingly deserves a bay’ah upon the neck of every Muslim. So it is the presence of the Khalifah which places a bay’ah on the neck of every Muslim, whether the Muslim actually gave a bay’ah to him (in person) or not. Therefore, this hadith of the Prophet (saw) is evidence that the appointment of the Khalifah is an obligation and not a proof that giving the bay’ah is obligatory. This is so because what was rebuked by the Prophet (saw) was the absence of a bay’ah on the neck of a Muslim until he dies, but he did not rebuke the absence of the bay’ah. Muslim narrated from Al-’Araj from Abu Hurairah (ra) from the Prophet (saw) who said:

And Muslim reported from Abu Hazim who said:

And from bin ‘Abbas from the Prophet (saw) who said:

In these ahadith, the Prophet (saw) informs us that leaders will run the affairs of Muslims, and they include the description of the Khalifah as a shield i.e. a protection. So the description of the Imam as a shield is informative of the benefits of the presence of the Imam, thus it is a command for action. This is because if the information conveyed by Allah (swt) and the Prophet (saw) contained rebuke then it is a command of prohibition, and if it contained praise then it is a command for action. If the ordered action is necessary to implement a hukm shari’ (Shari’ah rule), or by its negligence a hukm shar‘i will be neglected, then this command is decisive. In these ahadith there is information also that those who run the affairs of Muslims are Khulafaa, which indicates an order to appoint them. They also include a prohibition for Muslims to separate from the authority, which indicates the obligation upon Muslims to appoint an authority for themselves i.e. ruling. Moreover, the Prophet (saw) ordered the Muslims to obey the Khalifah and to fight those who dispute his authority as Khalifah, which indicates an order to appoint a Khalifah and to protect his Khilafah by fighting against whosoever disputes with him. Muslim reported that the Prophet (saw) said:

So the command to obey the Imam is an order to establish him, and the command to fight those who dispute with him is evidence that this command is decisive in maintaining the presence of one Khalifah.

As for the Ijma’a of the Sahabah (ra) they all agreed upon the necessity to establish a successor or Khalifah to the Prophet (saw) after his death, and they all agreed to appoint a successor to Abu Bakr, then to ‘Umar, then to ‘Uthman, after the death of each one of them. The Ijma’a of the Sahabah (ra) to establish a Khalifah manifested itself emphatically when they delayed the burial of the Prophet (saw) after his death while engaged in appointing a successor to him, despite the fact that the burial of the dead person is fard, and that it is haram upon those who are supposed to prepare for his burial to engage themselves in anything else until they complete the burial. The Sahabah (ra) were obliged to engage themselves in preparing the burial of the Prophet (saw), instead some of them engaged themselves in appointing a Khalifah rather than carrying out the burial, and some others kept silent on this engagement and participated in delaying the burial for two nights despite their ability to deny the delay and their ability to bury the Prophet (saw). So this was an Ijma’a to engage themselves in appointing a Khalifah rather than to bury the dead. This could not be legitimate unless the appointment of a Khalifah is more obligatory than the burial of the dead. Also, all the Sahabah (ra) agreed throughout their lives upon the obligation of appointing a Khalifah. Although they disagreed upon the person to be elected as a Khalifah, they never disagreed upon the appointment of a Khalifah, neither when the Prophet (saw) died, nor when any of the Khulafaa ar-Rashidun died. Therefore the Ijma’a of the Sahabah is clear and strong evidence that the appointment of a Khalifah is obligatory.

Also the establishment of Islam and the implementation of the Shari’ah rules in all walks of life is compulsory on Muslims through definitely proven evidences. This duty cannot be achieved unless there is a ruler who has an authority. The Shari’ah principle states:

So the establishment of a Khalifah is also compulsory according to this divine principle.

Therefore, it is clear from these evidences that the establishment of the rule and the authority amongst Muslims is fard, and it is also clear that the appointment of a Khalifah who takes the charge of the rule and the authority is compulsory upon Muslims in order to implement the Shari’ah rules and not merely for the sake of rule and authority in themselves. Reflect upon what Muslim narrated of his saying (saw) via ‘Awf bin Malik:

This hadith is clear in informing about the good and bad leaders, and clear in prohibiting confronting them with the sword as long as they establish the deen, since establishing the salat (prayer) indicates upholding of the deen and ruling by it.

So the obligation upon Muslims to appoint the Khalifah who establishes the laws of Islam and conveys its call is a matter which has no doubt with regard to its certainty in the sound texts of Shari’ah. Moreover, it is an obligatory duty due to the fact that Allah (swt) made it fard upon Muslims to establish the rule of Islam and to protect the honour of Muslims. However, this duty is a collective one, so if some people of the Ummah accomplished it, the fard is fulfilled and thus responsibility drops from the rest of the Ummah. And if part of the Ummah was unable to achieve the fard, though they carried out the actions which establish it, then the responsibility remains upon all the Muslims, and the fard remains upon every Muslim as long as Muslims are without a Khalifah.

To refrain from establishing a Khalifah for the Muslims is among the greatest sins because it is abstaining from carrying out among the most important obligations of Islam upon which the implementation of the deen depends; nay even the very existence of Islam in the battlefield of life depends upon it as well. So Muslims as a whole commit a great sin by refraining from establishing a Khalifah for all Muslims. And if they all agreed to remain without a Khalifah the sin would befall all Muslims in all inhabited regions (entire world). However, if some of the Muslims embarked on working to establish a Khalifah and the others did not, the sin will drop from the shoulders of those who started to work to establish the Khalifah though the fard remains upon them until the Khalifah is appointed. (This is so) because the involvement in establishing the fard removes the sin for the delay in establishing it in its proper time, and for its non-establishment, due to one’s work to establish it and his hatred of that which prevents him from establishing it.

As for those who were not engaged in the work to establish the fard, the sin will remain on them after three days have passed from the departure of the Khalifah until the appointment of a new Khalifah, because Allah (swt) has entrusted them with a fard which they did not carry out nor engage themselves in the work which is required for its completion. Therefore, they are deserving of sin and deserve the punishment of Allah (swt) in this life and the hereafter. Their deserving of sin due to their refraining from establishing the Khalifah, or performing the actions which (according to Shari’ah) establish the Khalifah, is explicitly clear in that a Muslim deserves the punishment of Allah (swt) when he ignores any of the duties enjoined upon him, particularly the obligation by which the other obligations are implemented, the rules of the deen are established, the cause of Islam is raised high and the word of Allah (swt) becomes exalted in the Islamic lands and the rest of the world.

This hadith is clear in its expression that the Prophet (saw) ordered the Muslims to adhere to the jama‘ah of Muslims and to adhere to their Imam, and to leave those who invite people to the doors of hell. The questioner asked him what he has should do in relation to those callers at the doors of Hellfire in the situation wherein the Muslims have no Imam and no jama‘ah; thereupon the Prophet (saw) ordered him to separate from all these groups, not to disassociate himself from the Muslims nor to abstain from the action for establishing an Imam. So his order is clear “Separate from all those groups”, and he emphasised the separation from those groups even to the extent that his isolation from them would make him clench to the trunk of a tree until death comes to him. Its meaning is to adhere to your deen and keep away from the misguiding callers who are at the doors of Hellfire. In this hadith there is no excuse or permission (for anybody) to abandon the work for establishing a Khalifah, it is, rather, confined to the command of adhering to the deen and abandoning the callers at the doors of hell, and the sin will remain on him if he does not work to establish a Khalifah. So he is ordered to abandon the misguiding groups in order to save his deen from the callers of the misguidance, even if he had to bite the root of a tree, but not to distance himself from the Muslim community and abandon the work for establishing the laws of the deen and establishing an Imam for Muslims.

Another example is what al-Bukhari narrated from Abu Said al-Khudri, who said:

This does not mean that one should isolate oneself from the Muslim community, abandon practising the laws of the deen and establishing a Khalifah for Muslims when there is no Khilafah on earth. All that it contains is an explanation of what is the best wealth of the Muslim at the times of affliction; it does not encourage separation from the Muslims and isolation from the people.

Accordingly, no Muslim on the face of this earth has an excuse to abandon the duty of establishing the deen which Allah (swt) has ordered, that is, the establishment of a Khalifah for Muslims when there is no Khilafah on the earth, when there is no one to implement the punishments (hudood) of Allah (swt) to protect the sanctities of Allah (swt), and no one to implement the laws of the deen and unify the Muslim community under the banner of La ilaha illa Allah, Muhammad ur-Rasul Allah. There is no permission in Islam to abandon the work for this duty until it is indeed completed.