The assistants are the Wazirs whom the Khaleefah appoints to assist Him in discharging the burdens and responsibilities of the Khilafah. There are numerous burdens in the Khilafah, especially when the state is growing and expanding, and these would be a heavy burden for the Khaleefah alone. Hence, He needs people to help Him in carrying this burden and discharging these responsibilities. The appointment of such assistants is one of the Mubah matters.

The assistants whom the Khaleefah appoints to help Him in carrying the burden of the Khilafah are of two types: the delegated assistants and the executive assistants.