Sunan Abi Dawud 5067
سنن أبي داود#5067SahihNarrated AbuHurayrah: AbuBakr as-Siddiq said: Messenger of Allah! command me something to say in the morning and in the evening. He said: Say "O Allah, Creator of the heavens and the earth, Who knowest the unseen and the seen, Lord and Possessor of everything. I testify that there is no god but Thee; I seek refuge in Thee from the evil within myself, from the evil of the devil, and his (incitement to) attributing partners (to Allah)." He said: Say this in the morning
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Zubair Ali ZaiSahih
In-book reference: 43:295