A case was brought before Hajjaj bin Yusuf: concerning the mother, grandfather, and sister. He asked me, and I said: This is the verdict of Sayyiduna Ali (may Allah be pleased with him) and seven companions: Sayyiduna Umar, Sayyiduna Abdullah bin Mas'ud said: "The sister gets half, the mother gets one-sixth, and the grandfather gets one-third." Sayyiduna Ali said: "The mother gets one-third, the sister gets half, and the grandfather gets one-sixth." Sayyiduna Uthman said: "Each of the three gets one-third." Hajjaj said: This is nothing. Zaid bin Thabit (may Allah be pleased with him) said: "Divide into nine shares: three for the mother, four for the grandfather, and two for the sister." Sayyiduna Ibn Abbas and Abdullah bin Zubair (may Allah be pleased with them both) said: "The mother gets one-third, the grandfather gets the remainder, and the sister gets nothing."
Hadith Referenceسنن سعید بن منصور / كتاب ولاية العصبة / 1248
Hadith Takhrij«أخرجه سعيد بن منصور فى «سننه» ترقيم الدرالسلفية برقم:، 71، والبيهقي فى«سننه الكبير» برقم: 12577، 12578، 12579، وعبد الرزاق فى «مصنفه» برقم: 19069، وابن أبى شيبة فى «مصنفه» برقم: 31894»