Mas’ala 457بداية المجتهدComparativevol. 1, p. 62vol. 1, p. 62 وَهُوَ مَعْرِفَةُ أَحْكَامِ الْحَيْضِ وَالِاسْتِحَاضَةِ. Read the whole chapterCopy with source On the map: PurityCompare