Sahih Muslim 1730
صحيح مسلم#1730SahihMasruq is reported to have asked 'A'isha about the action (most pleasing to) the Messenger of Allah (ﷺ). She said:He (the Holy Prophet) loved (that action) which one keeps on doing regularly. I said (to 'A'isha): When did he pray (at night)? She replied: When he heard the cock crow, he got up and observed prayer
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 6:159