Two daughters, both parents and a wife

Sufyan narrates through a man; he said: I have not seen any man better at calculation than Sayyiduna Ali (may Allah be pleased with him). He was asked about the case of two daughters, parents and a wife, and he said: "Her eighth has become a ninth."

Abu Bakr (Ibn Abi Shaybah) said: This case works out from twenty-seven shares: sixteen shares for the two daughters, eight shares for the parents and three shares for the wife.