Zechariah 3:2 New International Version
The LORD said to Satan, "The LORD rebuke you, Satan! The LORD, who has chosen Jerusalem, rebuke you! Is not this man a burning stick snatched from the fire?" //
When trying to identify the source of an NT citation of the OT it is important to consider the Greek OT, from which most NT citations of the OT employ. Please add Zech 3:2 from BES [Brenton's English Septuagint] to your scriptures in your question. blueletterbible.org/bes/zec/3/2/s_914002 //
A:
This is a contentious question and has been much debated even from the time of Origen. According to Origen, the account of Michael disputing with Satan over the body of Moses, is attributed to material contained in the Testament of Moses [also known as, "The Apocalypse of Moses", or, "The Assumption of Moses"]. However, about one third of the text of the Testament of Moses is now missing and there is no mention of such an incident in the text that remains.
Modern critical scholarship (with which I only rarely agree) suggest that this part of Jude is a midrash of Zech 3 and material from the Testament of Moses [eg, https://en.wikipedia.org/wiki/Assumption_of_Moses ]. Certainly, Jude quotes often from both the OT pseudepigrapha, eg, Jude 14, 15 quotes 1 Enoch 1:9.
The idea of the LORD rebuking people is a regular theme in the OT, for example: [....]