A'isha reported:The Messenger of Allah (ﷺ) used to observe thirteen rak'ahs of the night prayer. Five out of them consisted of Witr, and he did not sit, but at the end (for salutation)

This hadith has been narrated by Hisham with the same chain of transmitters

A'isha reported that the Messenger of Allah (ﷺ) used to pray thirteen rak'ahs during the night including the two rak'ahs (Sunan) of the dawn prayer