Allah  has not ordered us to follow any mujtahid, imam or mazhab, rather He  ordered us to adopt the hukm Shar’i. He  ordered us to adopt what the Messenger  brought and to abstain from what he  has forbidden us. He  said:

Therefore, the Sharī’ah does not deem it right for us to follow the people except the rules of Allah . However, the reality of Taqlīd has led the Muslims to follow the rules of certain mujtahids whom they have assigned as imams for themselves and they made the rules these mujtahids have deduced by their Ijtihād as a mazhab for themselves. So the Shafi’is, Hanafis, Malikis, Hanbalis, Ja’faris and Zaidis etc have an actual presence amongst the Muslims. Even though these people follow the Sharī’ah rules which have been deduced by these mujtahids, their action is legitimate because it constitutes following a Sharī’ah rule. As for if they followed the mujtahid as a person and not his deduction, then their action is not lawful and what they follow is not considered a Sharī’ah rule. This is because it is a statement of a person which is not from the orders and prohibitions of Allah  which have been brought to us by the Messenger of Allah, Muhammad . Consequently, all those who follow mazhabs must understand that they are following only the rules of Allah  which have been deduced by those imams. If they have a contrary understanding then they will be answerable to Allah  for leaving the rules of Allah  and following people who are themselves the servants of Allah .