Musnad Abu Ya'la al-Mawsili 150:162

'Abd al-A'la narrated to us, Mu'tamir ibn Sulayman narrated to us, he said: I heard Layth narrating from Thabit, from al-Qasim ibn Muhammad, from 'A'ishah, she said: The Messenger of Allah (ﷺ) said: "Hand me the prayer mat (khumrah) from the mosque." I said: "I am menstruating." He said: "Your menstruation is not in your hand."