It is narrated from Nudbah, the freed slave-woman of Sayyidah Maymunah (may Allah be pleased with her), that the Prophet (peace and blessings be upon him) would have bodily contact (mubasharah) with his wives while they were menstruating, when they had on a waist-wrap reaching to the middle of the thigh or to the knees, wrapped tightly in it.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحيض / 1502