Exodus:22:29-30
bes@Exodus:22:29 @ Thou shalt not keep back the first-fruits of thy threshing floor and press. The first-born of thy sons thou shalt give to me.
bes@Exodus:22:30 @ So shalt thou do with thy calf and thy sheep and thine ass; seven days shall it be under the mother, and the eighth day thou shalt give it to me.