Deuteronomy 15:19-23

19“All the firstborn males that are born in your herd and your flock you are to consecrate to Adonai your God. You are to do no work with the firstborn of your herd or shear the firstborn of your flock.

20You are to eat it before Adonai your God year after year in the place Adonai chooses—you and your household.

21But if it has any blemish—if it is lame or blind or has any serious blemish—you are not to sacrifice it to Adonai your God.

22You are to eat it within your gates, the unclean and the clean together, just as they eat the gazelle or deer.

23Only its blood you are not to eat—you must pour it out on the ground like water.