Mas’ala 73453المبسوطHanafivol. 30, p. 292vol. 30, p. 292 وَمَنْكُوحَةُ الْأَبِ مِنْ جُمْلَةِ الْمُحَرَّمَاتِ عَلَى الِابْنِ وَعَلَى ابْنِ الِابْنِ، Read the whole chapterCopy with source On the map: SucklingCompare