Exodus 22:28-31 - Regulations Regarding Tribute And Holiness
28 Thou shalt not revile the gods, nor curse the ruler of thy people.
29 Thou shalt not delay to offer the first of thy ripe fruits, and of thy liquors: the first-born of thy sons shalt thou give to me. 30 Likewise shalt thou do with thy oxen, and with thy sheep: seven days it shall be with his dam; on the eighth day thou shalt give it to me.
31 And ye shall be holy men to me: neither shall ye eat any flesh that is torn of beasts in the field; ye shall cast it to the dogs.