´Aishah narrated:` "When Allah's Messenger (S) prayed the two Rak'ah (before) Fajr if he needed something from me he would talk to me, if not, he would go to Salat."
Hadith Referenceسنن ترمذي / أبواب السهو / 418
Hadith Gradingالألبانی:صحيح، صحيح أبي داود (1147 و 1148)