Musannaf Ibn Abi Shaybah 31000 — Book of the Judgments

Huzayl bin Shurahbil said that a man came to Sayyiduna Abu Musa (may Allah be pleased with him) and Salman bin Rabi'ah and asked the two of them about the shares in inheritance of a daughter, a son's daughter and a full sister. The two of them replied: "The daughter will receive half of the estate, and whatever remains will go to the sister." They also said: "Go to Ibn Mas'ud and ask him as well; he will give the same answer." So the man went to Sayyiduna Ibn Mas'ud (may Allah be pleased with him), asked him, and informed him of what the two of them had said. Ibn Mas'ud said: "Then I would surely have gone astray and would not be among the rightly guided. Rather, I will give the ruling that the Messenger of Allah (peace and blessings be upon him) gave concerning this: the daughter will receive half of the estate, and the son's daughter will receive one sixth, to complete the two thirds, and whatever remains will go to the sister."