Musannaf Ibn Abi Shayba 21:145

Shababa narrated to us, Shu'bah narrated to us, from Musa bin Abi 'Aisha, from a freed slave of Umm Salamah, from Umm Salamah, that the Prophet, peace and blessings of Allah be upon him, used to say when he prayed the morning prayer, when he finished the prayer: "O Allah, I ask You for beneficial knowledge, and goodly provision, and accepted deeds."