Musannaf Ibn Abi Shayba 26:165

Ibn Fudayl narrated to us, from Bassam, from Fudayl ibn ‘Amr, who said: Ibrahim said: Six women inherit from women: the daughter, the son’s daughter, the mother, the grandmother, the sister, and the wife. And women inherit from seven men: she inherits from her father, her son, her son’s son, her brother, her husband, and her grandfather. And she inherits from her daughter’s son one-sixth, unless he has an agnate (asaba) other than her.