Sunan an-Nasa'i 1126

‘Amr ibn ‘Ali reported to us; he said: ‘Abd al-Rahman—Ibn Mahdi—narrated to us; he said: ‘Abd al-‘Aziz ibn Abi Salamah narrated to us; he said: My uncle, al-Majishun ibn Abi Salamah, narrated to me, from ‘Abd al-Rahman al-A‘raj, from ‘Ubayd Allah ibn Abi Rafi‘, from ‘Ali, that the Messenger of Allah (ﷺ), when prostrating, would say: “O Allah, to You I have prostrated, to You I have submitted, and in You I have believed. My face has prostrated to the One who created it and fashioned it, giving it its fine form, and made its hearing and sight. Blessed is Allah, the Best of creators.”