- Knowledge of the locations (Mawaadi’) of the Aayaat of the Ahkaam (rulings) so that he can easily refer to them.

- Knowledge of the Ahkaam that are benefited and extracted from the Aayaat and their Asbaab An-Nuzool (circumstances or causes of their revelation).

- Knowledge of the Naasikh (abrogating) and the Mansookh (abrogated) in respect to the Noble Aayaat.

Al-Ijtihaad linguistically means the exertion of effort and exhaustion of capability in respect to an action or undertaking. It is not used except for that which includes within it effort. It is said for instance: That the man made Ijtihaad when carrying a heavy stone hand milling grinder but he did not do Ijtihaad when carrying a feather.

Al-Ijtihaad in Al-Istilaah (terminological definition):

It is the exertion of the capability (and effort) to seek the Zhann (what is thought most probable) of a matter from the Ahkaam Ash-Shar’iyah in the case where the Mujtahid feels that he is incapable of doing any more (or exerting any more effort).

The meaning of this is that the Mujtahid exerts his mental efforts to deduce the practical Ahkaam Ash-Shar’iyah from its detailed evidences, in the case where he feels the inability to come up with and produce anything more accurate or correct than what he has arrived at (i.e. concluded and deduced).

Ijtihaad occurs in respect to the Nusoos (texts), the evidences of which are Zhanniyah (indefinite). Meaning those texts which have the potential to hold more than one meaning. This is like the Aayah:

Or His Qawl (swt):

The meaning of ‘Lams’ (touching) is open to two meanings: The touch of the hand and sexual intercourse. Likewise, ‘Al-Quroo’ is open to two meanings: One is purity and the other is menstruation. Outweighing one meaning over the other is Ijtihaad whilst the outweighing or stronger (Raajih) opinion is Zhanniy (indefinite). The Mujtahid then considers his opinion to be correct albeit open to the possibility of error. He considers the opinion of others to be wrong with the possibility of being correct.

As for the texts which have a Qat’iyah Dalaalah (definite indicated meaning) where they are not open to except one meaning that the Alfaazh (wordings) of the text have guided to, then in respect to the texts that fall within this category, there is no room for Ijtihaad to be undertaken in relation to them. It has been said in this regard: ‘Laa Ijtihaad Fee Mawrid An-Nass’ (There is no Ijtihaad in respect to the origin of the text i.e. what has been expressed in a definite manner not open to interpretation).

Islaam has encouraged the undertaking of Ijtihaad and has provided two rewards (Ajr) to the one who performs Ijtihaad and is correct whilst it has provided the one who performs Ijtihaad and is incorrect (in his opinion) with a single reward. The Sahaabah (rah) at the time of the Messenger of Allah (saw) used to perform Ijtihaad whilst the Messenger of Allah (saw) approved of that. The Muslims who came after them proceeded upon the same path and methodology and the ‘Ulamaa and Fuqahaa of the Muslims have left for us an enormous treasure of their Ijtihaadaat filling the libraries with their written works.

For the Mujtahid to be qualified and capable of Ijtihaad it is necessary for the following conditions of Ijtihaad to be met and fulfilled within him:

This means that the Mujtahid has a suitable level and sufficiency of the knowledge of Arabic like the ‘Ilm of Nahw, Balaaghah and Fiqh of the language. That is so that he is able to distinguish between the Dalaalaat (indications and implications) of the Alfaazh like the Dalaalat ul-‘Ibaarah and Dalaalat ul-Ishaarah, Al-Haqeeqah and Al-Majaaz, Al-‘Aamm and Al-Khaass, Al-Muqayyad and Al-Mutlaq, Al-Mushtarak, Al-Mantooq and Al-Mafhoom… This does not mean that he needs to be a scholar and Mujtahid in the language but only that he has to be endowed with all that he requires to understand the Shar’iyah texts as they came in the Arabic language in style (Usloob) and worded expressions (Alfaazh).

These are: Al-Kitaab, As-Sunnah, Al-Ijmaa’ and Al-Qiyaas amongst others. What is intended by having a knowledge of these Adillah (evidences) does not mean encompassing every detail and meaning that they contain or memorising them all. Rather what is intended by this knowledge is the following:

- To know its Saheeh (sound) from its Da’eef (weak).

- To know its levels of strength: Al-Mutawaatir, Al-Mash’hoor and Al-Aahaad.

- Knowledge of the meanings of the Hadeeth and the circumstances for its mention.

- Knowledge of the Naasikh and Mansookh in respect to them.

- Knowledge of the Hadeeth’s explanation of the Aayaat i.e. the relationship of the Hadeeth with the Qur’aan from the angle of its indication of a Hukm

After the Mujtahid has specified the (type of) Ijmaa’ that he will be depending upon in his Ijtihaad, in respect to whether it is Ijmaa’ As-Sahaabah, Ijmaa’ Al-Ummah, Ijmaa’ Al-Mujtahideen or other than these, he then must have knowledge of the locations or contexts (Mawaadi’) of the Ijmaa’ so that he can be fully aware of them and then not contravene them within the Masaa’il (issues) that he is undertaking Ijtihaad in.

Knowledge of the ‘Illah, its types, its conditions and the manner of how to attach the Far’u (branch) to the Hukm of the Asl (origin) due to the commonality of the ‘Illah existing between them

The Mujtahid requires knowledge of the principles (Qawaa’id) of Usool ul-Fiqh so that he can arrive at the deduction of the practical Ahkaam Ash-Shar’iyah from its detailed evidences through them. This is like Qaa'idah:(The significance (consideration) is in the generality of the worded expression and not in the specificity of the cause). Or like the Qaa'idah:( That which the Waajib is not completed except with it, is Waajib) and the Qaa’idah: (Making both evidences work (together) is better or more appropriate than disregarding one of them) in addition to the specific principles related to when there appears to be a conflict between the evidences and outweighing them (At-Tarjeeh)