Musannaf Ibn Abi Shayba 17:1239

Muhammad ibn Bishr narrated to us, he said: Mis'ar narrated to us, he said: Abu 'Aqil narrated to us, from Sabiq, from Abu Sallam, the servant of the Messenger of Allah (may Allah bless him and grant him peace), who said: "There is no Muslim, or human, or servant who says when he enters the evening and the morning three times: 'I am pleased with Allah as a Lord, and with Islam as a religion, and with Muhammad as a Prophet' three times, except that it is a duty upon Allah to please him on the Day of Resurrection."