for a fatwa relating to a court judgement that has already been passed, acting as an informal appeals process, but the extent of this practice and its mechanism varied across history. While in most of the Islamic world judges were not required to consult muftis by any political authority, in Muslim Spain this practice was mandatory, so that a judicial decision was considered invalid without prior approval by a legal specialist.

Author-jurists collected fatwas by muftis of high scholarly reputation and