The Four Imams, the imams of the four madhhabs, are the religious scholars whose leaderships are unanimously agreed upon by all the Sunni Muslims in all their orientations. These imams agree on all the jurisprudential principles, and they differ in some branches, and the sub-issues in which they differ are what formed the emergence of the four schools of jurisprudence (Hanafi, Maliki, Shafi'i, Hanbali).