Musnad Ahmad 1153:388

Ishaq ibn Isa narrated to us, he said: Ibn Lahi'ah narrated to me, and Yahya ibn Ishaq said: Ibn Lahi'ah informed us, from Khalid, from al-Qasim ibn Muhammad, from Aisha, she said: "The Messenger of Allah, peace and blessings of Allah be upon him, would place his head in my lap while I was menstruating, and he would recite the Quran."