Mas’ala 2472مختصر المزنيShafi'ivol. 1, p. 239vol. 1, p. 239 وَإِنْ سَفَلَ لَمْ يُورَثْ أَحَدٌ مِنْ وَلَدِ جَدِّهِ، Read the whole chapterCopy with source On the map: InheritanceCompare