Abu Qatada reported,

The Prophet ﷺ asked Abu Bakr, "When do you perform the witr prayer?"Abu Bakr replied, "I perform witr at the beginning of the night."He then asked Umar, "When do you perform witr?"Umar replied, "At the end of the night."The Prophet ﷺ said about Abu Bakr, "This one has taken the path of caution," and said about Umar, "This one has taken the path of strength."

Azami 2796

Sahih

عن أبي قتادة

أن النبي ﷺ قال لأبي بكر: متى توتر؟ قال: أوتر من أول الليل، وقال لعمر: متى توتر؟ قال: آخر الليل. فقال لأبي بكر: أخذ هذا بالحزم وقال لعمر: أخذ هذا بالقوة.

الأعظمي 2796صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Prayer
Chapter
Witr prayer
Section
Preferred time for witr is the end of the night for one who is able, and performing it earlier for others
Numbering
Jami al-Kamil 2796 (2nd edition)
Azami 2796