What is the best time to perform witr?

Assalamu alaykum Please how many raka'ats is the Witr prayer and when is it best observed.. is it before going to bed or shortly before dawn? Jazakallahu khayran

Alaikumassalam wa rahmatullah,

Witr should be performed as the last prayer of the night before dawn. The best time to perform it is related to the best time to perform tahajjud (since witr is the last prayer during tahajjud), and according to the fatwas I’ve read the best time to perform tahajjud is during the last third of the night (night means the time between isha and fajr).