Sunan Abi Dawud, Hadith 1258 ⓘ
Narrated Aisha, Ummul Mu'minin: When the Prophet prayed the two rak'ahs of the dawn prayer, he would lie down if I was asleep; in case I was awake, he would talk to me.
حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا سُفْيَانُ، عَنْ زِيَادِ بْنِ سَعْدٍ، عَمَّنْ حَدَّثَهُ - ابْنِ أَبِي عَتَّابٍ، أَوْ غَيْرِهِ - عَنْ أَبِي سَلَمَةَ، قَالَ قَالَتْ عَائِشَةُ كَانَ النَّبِيُّ صلى الله عليه وسلم إِذَا صَلَّى رَكْعَتَىِ الْفَجْرِ فَإِنْ كُنْتُ نَائِمَةً اضْطَجَعَ وَإِنْ كُنْتُ مُسْتَيْقِظَةً حَدَّثَنِي .
also referenced under: Hadith 1263 (DarusSalam) & Book 4, Hadith 1258 (USC-MSA)