Sunan Abi Dawud Book 5, Hadith 12
The Prophet (ﷺ) said: If any of you prays two rak'ahs before the dawn prayer, he should lie at his right side.
Marwan ibn al-Hakam said to him: Is it not enough that one of us walks to the mosque until he lies at his right side? According to the version of Ubaydullah, he (AbuHurayrah) replied: No.
This statement (of AbuHurayrah) reached Ibn Umar. He said: AbuHurayrah exceed limits on himself. He was asked: Do you look askance at what he says? He replied: No, but he dared and we showed cowardice. This (criticism of Ibn Umar) reached AbuHurayrah. He said: What is my sin if I remembered and they forgot?
That he heard the Prophet (ﷺ) recite in both rak'ahs of the dawn: "Say: We believe in Allah, and in the revelation given to us" (3:84). This is in the first rak'ah. In the second rak'ah he recited this verse: "Our Lord, we have believed in what You have sent down, and we follow the Messenger, so write us down among those who bear witness." or he recited: "Surely, we have sent you with the truth as a bringer of glad tidings, and a warner. And you will not be asked about the inhabitants of the Blazing Fire" (2:119). Al-Darawardi doubted (which of the verse he recited).
When the Messenger of Allah (ﷺ) finished his prayer late in the night, he would see. If I was awake, he would talk to me. If I was sleeping, he would awaken me, and pray two rak'ahs, then he would lie down as long as the mu'adhdhin came to him and call him for the dawn prayer. Then he would pray two rak'ahs lightly and come out for prayer.