4. Ali ibn Ibrahim has narrated from his father from and Muhammad ibn ‘Isma’il has narrated from al-Fadl ibn Shadhan from all from Ibn Abi ‘Umayr from Hisham ibn Salim and Muhammad ibn Flakim who has said the following: “Abu ‘Abd Allah عليه السلام, has said, ‘If both father and grandfather give in marriage, the first one’s marriage is effective and if both happens at the same time, the grandfather has the priority.’”