Abu Saeed Khudri reported,

The Prophet ﷺ said, "Pray the Witr before morning comes."

Azami 2802

Sahih

عن أبي سعيد

أن النبي ﷺ قال: أوتروا قبل أن تصبحوا

الأعظمي 2802صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Prayer
Chapter
Witr prayer
Section
Hastening to perform Witr prayer before Fajr, and whoever deliberately delays it until Fajr rises has no Witr
Numbering
Jami al-Kamil 2802 (2nd edition)
Azami 2802