"The Messenger of Allah (ﷺ) used to pray witr with thirteen rak'ahs, and when he grew older and weaker he prayed witr with nine."
Sunan an-Nasa'i Book 20, Hadith 111
← Previous Hadith "The Messenger of Allah (ﷺ) used to pray eight rak'ahs at night and pray witr with three, and pray two rak'ahs before Fajr."

Sunan an-Nasa'i Book 20, Hadith 110 Next Hadith → "The Messenger of Allah (ﷺ) used to pray nine (rak'ahs) at night, then when he grew older and put on weight he prayed seven."

Sunan an-Nasa'i Book 20, Hadith 112