Wahhabi movement
The Wahhabi scholars also advocated for a principle in Islamic legal theory often referred to as "the rule against "Ijtihad" reversal". This principle allows overturning a scholar's "fatwa"(legal judgement) when he bases it on personal "Ijtihad"(personal legal reasoning), rather than a clear textual source from Qur'an and Hadith. In effect, this allowed the Wahhabi "qadis" to remain autonomous. Opponents of Wahhabi movement harshly rebuked them for advocating Ijtihad and not recognising the finality of "mad'habs"(law schools).