הַבֹּ֖קֶר א֑וֹר וְהָאֲנָשִׁ֣ים שֻׁלְּח֔וּ הֵ֖מָּה וַחֲמֹרֵיהֶֽם׃
Le matin venu, on laissa repartir ces hommes, eux et leurs ânes.
Pesachim
... [Gemara:] What is the meaning of אור? ... (Beraishit 44:3) "The morning lightened, and the people were sent off". Therefore, "light" is of the morning