Hasan (may Allah have mercy on him) said that Sayyiduna Zaid (may Allah be pleased with him) used to make the grandfather a partner with the brothers in one third.

Ibrahim, may Allah have mercy on him, said: Sayyiduna Zayd bin Thabit, may Allah be pleased with him, used to allocate one-third to the grandfather along with the brothers, and he would not reduce it.

It is narrated from Ismail that 'Amir (al-Sha'bi) said: Act upon that regarding the grandfather on which the (scholars) of the people have consensus. Imam Darimi, may Allah have mercy on him, said: That is, adopt the statement of Sayyiduna Zaid, may Allah be pleased with him.