Quran 28:34 — History (Al-Qasas)
"Also, my brother Aaron is more eloquent than I. Send him with me as a helper to confirm and strengthen me. I fear lest they disbelieve me."
[28:33] He said, "My Lord, I killed one of them, and I fear lest they kill me.
[28:35] He said, "We will strengthen you with your brother, and we will provide you both with manifest authority. Thus, they will not be able to touch either one of you. With our miracles, the two of you, together with those who follow you, will be the victors."