Abu Abd Allah Mohammed ibn Abi al-Qasim al-Sijilmasi () was a Moroccan Maliki scholar. He is especially well known for his Sharh al-amal al-mutlaq: al-musammá bi-Fath al-jalīl al-samad fī sharh al-takmīl wa-al-mutamad.Toledano, Henry (1981), Judicial Practice and Family Law in Morocco: The Chapter on Marriage From Sijilmasi's Al-'Amal Al-Mutlaq., Boulder (CO): Social Science Monographs., Henry Toledano, "Al-Lamiya de az-Zaqqaq, al-'Amal al-Fasi de 'Abd ar-Rahman al-Fasi, y al-'Amal al-Mutlaq de as-Siyilmasi", International Journal of Middle East Studies, vol. 5, 1974 It was finished in 1782. According to al-Hajwi, Sijilmasi died of the plague in Boujad on the i ith of Shawwal 1214/1800.
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See also Abd al-Rahman al-Fasi Ali ibn Qasim al-Zaqqaq