It is narrated from Ahmad ibn Al-Hasan, from his father, from Hammad ibn Isa, from Hariz, from Zurara, who said: I asked one of the Imams عليه السلام about a menstruating woman whose husband approaches her. Imam عليه السلام said: "There is nothing obligatory upon him; he should seek forgiveness from Allah سبحانه وتعالى and not repeat the act."