Musannaf Ibn Abi Shaybah 17677 — A man: what he may do with his wife

Asim bin Amr al-Bajali said: Some people of Iraq came to meet Sayyiduna Umar (may Allah be pleased with him). Sayyiduna Umar (may Allah be pleased with him) said: "Who are you?" They said: "We are Iraqis." Sayyiduna Umar (may Allah be pleased with him) said: "Have you come with permission?" They said: "Yes." Then they asked what a man may do with a woman during menstruation. Sayyiduna Umar (may Allah be pleased with him) said: "You have asked me something that no one has asked me since I asked the Messenger of Allah (peace and blessings be upon him) about it. He (peace and blessings be upon him) said: 'As for what a man may have of his wife while she is menstruating, he has what is above the waist-wrapper (izar).'"