Hazrat Mujahid and Hazrat Ata say that if a man commits adultery with a woman, then marrying that woman is permissible for him, but he cannot marry her daughter.

Hazrat Jabir bin Zaid and Hasan considered it undesirable for a man to touch a woman whose mother he has had intercourse with.

Hazrat Yazid Rashk states that I asked Hazrat Saeed bin Musayyib, "If a man commits adultery with his mother-in-law, what is the ruling?" He replied, "The mother will become forbidden (haram), but the daughter will remain permissible (halal)."