what is oran fatwa?
A "responsum" fatwa to address the crisis that occurred when Muslims in the Crown of Castile were forced to convert to Christianity
Oran fatwa
The Oran fatwa was a "responsum" fatwa, or an Islamic legal opinion, issued in 1504 to address the crisis that occurred when Muslims in the Crown of Castile (in Spain) were forced to convert to Christianity in 15001502. 
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Oran fatwa [SEP] Introduction
The Oran fatwa was a "responsum" fatwa, or an Islamic legal opinion, issued in 1504 to address the crisis that occurred when Muslims in the Crown of Castile (in Spain) were forced to convert to Christianity in 15001502. The fatwa sets out detailed relaxations of the sharia (Islamic law) requirements, allowing the Muslims to conform outwardly to Christianity and perform acts that are ordinarily forbidden in Islamic law, when necessary to survive. It includes relaxed instructions for fulfilling the ritual prayers, the ritual charity, and the ritual ablution, and recommendations when obliged to violate Islamic law, such as worshipping as Christians, committing blasphemy, and consuming pork and wine.