Xalifa — ummatni hokimiyatda, vakolatda va Ilohiy qonunlar (Shariat) ni amalga oshirishda vakil etgan shaxsdir. Islom hokimiyat va vakolat ummatga tegishli, deb hukm qilgan. Shuning uchun ummat o‘z nomidan hokimiyatni boshqarish va Ilohiy qonunlarni uning nomidan qo‘llash uchun bir shaxsni tayinlashi lozim. Alloh ummatga Shariatning barcha qismlarini amalga oshirishni farz qilgan. Xalifa musulmonlar tomonidan tayinlanganligi sababli, u hokimiyat, vakolat va Shariat hukmlarini amalga oshirish jihatidan ummatning vakili hisoblanadi. Ummat unga bay’at (sodiqlik qasamyodi) bermaguncha, hech kim xalifa bo‘la olmaydi, chunki hokimiyat, vakolat va Shariatni amalga oshirish asli ummatga tegishlidir. Ummat biror kishiga xalifa sifatida bay’at berganda, u uni o‘zining vakili etib tayinlaydi. Ushbu bay’at orqali Xalifalik davlati unga topshiriladi, unga vakolat (sulton) beriladi va ummat unga itoat etishga majbur bo‘ladi.

The Khalifah is the man who represents the Ummah in ruling, authority and in the implementation of the Divine laws (Shariah). Islam has decreed that ruling and authority belong to the Ummah. It is therefore for the Ummah to appoint an individual to administer that authority and apply the divine laws on her behalf. Allah made it obligatory upon the Ummah to execute all of the Shariah. Since the Khalifah is appointed by the Muslims, this makes him a representative of the Ummah in terms of ruling, authority and in the implementation of the Shariah rules. No-one can become a Khalifah unless the Ummah has given him the pledge of allegiance (Bayah) because ruling, authority and the implementation of the Shariah belong to the Ummah in origin. By giving Bay’ah to a man as Khalifah, the Ummah effectively appoints him as her representative. Through this Bayah the Khilafah state is delegated to him, giving him the authority (Sultan) and obliging the Ummah to obey him. .

Musulmonlarni boshqaradigan kishi, ummatning nufuzli kishilari (Ahl al-Hall va'l-Aqd) tomonidan majburlashsiz unga bay'at berilmaguncha, xalifa bo'lmaydi. U xalifa uchun majburiy bo'lgan ayrim shartlarni bajarishi kerak va shundan so'ng Shariat hukmlarini amalga oshirishga kirishishi lozim.

The man who rules the Muslims does not become Khalifah unless the Bay’ah is given to him by the influential people (Ahl al-Hall Wa’l-Aqd) from amongst the Ummah, without compulsion. He must fulfil certain obligatory conditions for a Khalifah and should proceed after that in implementing the rules of the Shariah.