Exodus 16:16

16:16 “This is what the Lord has commanded: ‘Each person is to gather from it what he can eat, an omer per person according to the number of your people; each one will pick it up for whoever lives in his tent.’”

Exodus 25:2

25:2 “Tell the Israelites to take an offering for me; from every person motivated by a willing heart you are to receive my offering.