Umm Salama bint Abu Umaya reported,

The Messenger of Allah ﷺ used to perform the witr prayer with thirteen units. When he grew older and weaker, he performed witr with seven.

Azami 2821

Hasan

عن أم سلمة قالت

كان رسول الله ﷺ يوتر بثلاث عشرة ركعة، فلما كبر وضعف أوتر بسبع.

الأعظمي 2821حسن
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Prayer
Chapter
Witr prayer
Section
Witr with thirteen and seven
Numbering
Jami al-Kamil 2821 (2nd edition)
Azami 2821