Sayyidah Maymunah (may Allah be pleased with her) said: "The Messenger of Allah (peace and blessings be upon him) would pray while I was lying asleep beside him (peace and blessings be upon him), and when he (peace and blessings be upon him) prostrated, his (peace and blessings be upon him) garment would touch my garment, while I was menstruating."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 20381