Musnad Abu Ya'la al-Mawsili 150:360

Abu Kurayb narrated to us, Ibn Abi Za’idah narrated to us, from Harithah ibn Muhammad, from ‘Amrah, from ‘Aishah, who said: When the Messenger of Allah (peace be upon him) would stand for ablution, he would tilt the vessel, then mention the name of Allah, and then perform the ablution thoroughly.