I heard the Messenger of Allah (ﷺ) say: Allah, the Exalted, says: Son of Adam, do not be helpless in performing four rak'ahs for Me at the beginning of the day: I will supply what you need till the end of it.
Sunan Abi Dawud Book 5, Hadith 40
← Previous Hadith The Prophet (ﷺ) said: Prayer followed by a prayer with no idle talk between the two is recorded in Illiyyun.

Sunan Abi Dawud Book 5, Hadith 39 Next Hadith → The Messenger of Allah (ﷺ) prayed on the day of the Conquest (of Mecca) eight rak'ahs saluting after every two rak'ahs.

Abu Dawud said: Ahmad b. Salih said that the Messenger of Allah offered prayer in the forenoon on the day of the Conquest of Mecca, and he narrated something similar. Ibn al-Sarh reported that Umm Hani said: The Messenger of Allah (ﷺ) entered upon me. This version does not mention the prayer in the forenoon.

Sunan Abi Dawud Book 5, Hadith 41