Ad-Dahhak b. Fairuz ad-Dailamli told on his father’s authority that he had said, "Messenger of God, I have accepted Islam and I am married to two sisters." He replied, “Choose whichever of them you wish.”
When I accepted Islam I had five wives, so I consulted the Prophet and he said, “Separate from one and keep four.” I therefore decided on the one who had been longest with me and had been barren for sixty years,* and separated from her.
* This statement may seem strange when one considers that Naufal is said to have died in the Caliphate of Yazid b. Mu'awiya (60-64 A.H.). Some say he lived 60 years in the pre-Islamic period and 60 years in Islam. Others says he died aged 100. He is said to have accepted Islam at the Conquest of Mecca. The tradition cannot mean that he had been married to this woman for 60 years; it probably indicates that she was both barren and much older than he. She was possibly his first wife. Cf. Ibn Abu Hatim, al-Jarh wat-ta’dil, IV, i, 487 i.; Isti'ab, p. 293 ; Ibn Hajar, Tahdhib, x, 492; Isaba, iii, 1191.
Ibn ‘Abbas told that a woman who had accepted Islam married, and her husband (i.e. the one she had left to marry another when she became a Muslim) went to the Prophet and said, "Messenger of God, I have accepted Islam and she knew that I had done so.” So God’s Messenger took her away from her second husband and restored her to her first. In a version he said, “She accepted Islam along with me,” so he restored her to him.
Ibn ‘Umar told that Ghailan b. Salama ath-Thaqafi accepted Islam and that he had had ten wives in the pre-Islamic period who accepted Islam along with him; so the Prophet told him to keep four and separate from the rest of them.
