Kanuni ya nne inasema kwamba Khalifah ndiye chombo pekee chenye mamlaka ya lazima ya kupitisha sheria na kanuni. Hili limethibitishwa kwa kauli ya pamoja (Ijmaa’) ya Maswahaba. Kufuatia kauli hii pamoja, kanuni hizi za Shari’ah zimetolewa: “Maoni ya Imam huondoa tofauti”; “Maoni ya Imam ni ya lazima kufuatwa”; “Sultani (Imam) ana haki ya kupitisha sheria mpya kwa mambo mengi mapya yanayojitokeza”.

The fourth principle, states that the Khaleefah is the sole body with mandatory powers to adopt laws and legislation. This has been proved by the general consensus of the Sahabah (Ijmaa’). Following this consensus these Shari’ah principles have been derived: “The opinion of the Imam settles the difference”; “The opinion of the Imam is binding”; “The Sultan (Imam) reserves the right to adopt new laws for as many new matters that arise”.

Hili litafafanuliwa baadaye pamoja na dalili zake, katika sura kuhusu mamlaka ya lazima ya Khalifa.

This will be explained later on together with its proofs, in the chapter on the mandatory powers of the Khaleefah.