Musannaf Ibn Abi Shayba 27:32

'Affan narrated to us, Wahib narrated to us, 'Abdullah bin 'Uthman bin Khuthaym narrated to us, from Ibn Abi Mulaykah, from 'Aishah, she said: I heard the Messenger of Allah, may Allah bless him and grant him peace, saying: "I am at the Basin (al-Hawd), waiting for whoever will come to me at the Basin."