It is narrated from Sayyiduna Abu Ayyub (may Allah be pleased with him) that he (peace and blessings be upon him) sent him some food with a green dish containing onion or leek. He did not see in it the marks of the fingers of the Messenger of Allah (peace and blessings be upon him), so he refused to eat it. The Messenger of Allah (peace and blessings be upon him) said to him: "What stopped you from eating?" He said: O Messenger of Allah! I did not see your mark in it. The Messenger of Allah (peace and blessings be upon him) said: "I feel shy before the angels of Allah; otherwise it is not forbidden."
Hadith Referenceالمعجم الكبير للطبراني / باب الخاء / 3981
Hasan al-Basri (may Allah have mercy on him) says: Everything of his wife is permissible for a man except the private part, meaning when she is menstruating. He said: The two may sleep under one quilt, meaning the menstruating woman, if there is a cloth over her private part.
Hadith Referenceالمعجم الكبير للطبراني / باب الخاء / 3982