Exodus 16:15-16

15When Bnei-Yisrael saw it, they said one to another, “What is it?” For they did not know what it was. Then Moses said to them, “It is the bread that Adonai has given you to eat.

16This is the word that Adonai has commanded. Every man is to gather according to his needs, an omer per person, according to the number of people per household. Each man is to take it for those who are in his tent.”