Sunan Abi Dawud 1262
سنن أبي داود#1262SahihNarrated 'Aishah: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
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniShadh
Muhammad Muhyi Al-Din Abdul HamidShadh
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Bukhari (1119) Sahih Muslim (743)
In-book reference: 5:13