What is the ruling on raising the hands in the du'a' of the qunut in the witr prayer?

Question:
May Allah reward you, Honorable Shaykh. This questioner says: What is the ruling on raising the hands in the qunut of the witr? And what is the evidence for that?

Answer:
The default is that the hands are raised in supplication, and this is one of the causes of the answer being granted. Raising the hands is among the etiquettes of supplication, except for what has been reported that the Messenger (peace and blessings be upon him) supplicated without raising his hands; in that case, the hands are not raised.