Rashi on Genesis 37:15/רש"י על בראשית ל״ז:ט״ו

1וימצאהו איש AND A MAN FOUND HIM — This was the angel Gabriel (Genesis Rabbah 84:14) as it is said, (Daniel 9:21) and the man (והאיש) Gabriel” (Midrash Tanchuma, Vayeshev 2:3).