(7) باب مَنْ نَامَ عِنْدَ السَّحَرِ
Narrated Masruq:
I asked `Aisha which deed was most loved by the Prophet. She said, "A deed done continuously." I further asked, "When did he used to get up (in the night for the prayer)." She said, "He used to get up on hearing the crowing of a cock."
Reference: Sahih al-Bukhari 1132
In-book reference: Book 19, Hadith 12
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 2, Book 21, Hadith 232