Numbers 15:3

3and ayou offer to the Lord from the herd or from the flock a food offering
Or  an offering by fire; so throughout Numbers
or a burnt offering or a sacrifice, cto fulfill a vow or as a freewill offering or dat your appointed feasts, to make a epleasing aroma to the Lord,

Deuteronomy 12:6

6and there you shall bring your burnt offerings and your sacrifices, fyour tithes and the contribution that you present, your vow offerings, your freewill offerings, and the gfirstborn of your herd and of your flock.

Deuteronomy 12:17

17You may not eat within your towns hthe tithe of your grain or of your wine or of your oil, or the firstborn of your herd or of your flock, or any of your vow offerings that you vow, or your freewill offerings or the contribution that you present,

Deuteronomy 16:10

10Then you shall keep ithe Feast of Weeks to the Lord your God with jthe tribute of a freewill offering from your hand, which you shall give kas the Lord your God blesses you.
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