Xalifa ishlarni boshqarishni o‘z vaziriga topshirardi va bu to‘g‘ri yo‘ldagi xalifalarning har biri bilan sodir bo‘lgan, ularning yordamchisi (vaziri) hozir bo‘lgan, ammo yordamchilar ishlarni qanday boshqarishda bir-biridan farq qilgan. “Vazir”, ya’ni xalifaga yordamchi, so‘zining lug‘aviy ma’nosidan shu tushuniladiki, bu xalifaning amallarida yordamchi degani; va so‘z hech qanday cheklovsiz umumiy kelganidan, demak, u xalifaning xilofat amallarining hammasida unga yordamchi degan ma’noni anglatadi. Rivoyatdan shunday tushuniladi va bu Umar (roziyallohu anhu) va Abu Bakr (roziyallohu anhu) bilan sodir bo‘lgan voqea bilan ham tasdiqlanadi. Shu sababli bu so‘zning shariat ma’nosi: xilofat amallarining hammasida xalifaga yordam beruvchi kishidir. Biroq u xalifaning o‘ziga xos majburiy vakolatlariga ega emas. Balki, agar xalifa: “Men falonchini o‘zimga vazir qilib tayinladim”, yoki “o‘zimga yordamchi qilib”, yoki “men boshqarayotgan ishda mening o‘rnimda ish yurit”, yoki shunga o‘xshash biror gap aytsa, o‘sha kishi vakil sifatida xalifaning barcha majburiy vakolatlariga ega bo‘ladi. “Al-Ahkom as-Sultoniyya” kitobida Al-Mawardiy ularni “vakolat berilgan vazir” (Vazir tafvid) deb atagan va uni shu ma’noda ta’riflagan: “Vakolat berilgan vazirga kelsak, u vazirligini imomdan olgan, uni o‘z fikriga ko‘ra ishlarni boshqarishga va ular o‘z ijtihodiga ko‘ra ish yuritishga vakolat bergan kishidir”. Biroq xalifa vakolat berilgan vazirning qilayotgan har bir ishidan xabardor bo‘lishi shartdir, chunki u yordamchi, xalifa emas, shuning uchun u mustaqil emas; balki xalifa uning har bir ishini, kichik bo‘lsin yoki katta, nazorat qiladi.
The Khalifah would delegate the management of affairs to his minister, and this occurred with each Khalifah from the righteous Khulafaa’ in that their assistant (minister) was present, though how the assistants practised the management of affairs differed from one to the other. It is understood from the linguistic meaning of the word “minister”, or assistant to the Khalifah, that it means an assistant for the actions of the Khalifah, and since the word came general without any restrictions, then it means assistant for the Khalifah in all of the actions of the Khilafah. This is what is understood from the narration, and is supported by what occurred with Umar (ra) and Abu Bakr (ra), and so the Shari’ah meaning of the word is the one who assists the Khalifah in all the actions of the Khilafah. However, he does not possess the mandatory powers of the Khalifah himself. Rather, if the Khalifah said “I have appointed so and so as a minister for me”, or “as an assistant for me”, or “act on my behalf in what I govern”, or anything similar, then the person would have all the mandatory powers of the Khalifah as his representative. In Al-Ahkam As- Sultaniyyah, Al-Mawardi called them the “delegated minister” (Wazeer Tafweed), and defined it with this meaning, saying, “As for the delegated minister, he has taken his ministry from the Imam who authorised him to manage the affairs according to his opinion, and for them to proceed according to his Ijtihad”. It is however necessary that the Khalifah is aware of every action that the delegated minister undertakes, since he is an assistant and not a Khalifah, and so he is not independent; rather the Khalifah inspects every action of him, whether it was small or big.