four sages/imams, scientists are acknowledged on righteousness by all Muslims from Sunnis all the trends, those scientists agreed that all jurisprudential origins, and they disagree some branches/ parts of jurisprudence, and they disagree about those sub-issues that are create Islamic schools of thought (Hanafi, Maliki, Shafi'i, Hanbali)[1] These imams, according to their appearance in order, are: