Mas’ala 5160الأمShafi'ivol. 2, p. 93vol. 2, p. 93 الْمُؤَلَّفَةِ فَإِمَّا زَادَهُ لِيُرَغِّبَهُ فِيمَا يَصْنَعُ، Read the whole chapterCopy with source On the map: ZakatCompare