Musannaf Ibn Abi Shayba 3:6381

Waki' narrated to us, he said: Talha bin Yahya narrated to us, from Ubaydullah bin Abdullah bin Utbah, from Aisha, she said: The Messenger of Allah (peace and blessings of Allah be upon him) used to pray at night while I was at his side, and I was menstruating, and I had a garment (mirt) of mine on, and some of it was upon him.