You must not slaughter an ox or a sheep and its young ¹  on the same day. ² 

“‘Surely no man may consecrate a firstborn that already belongs to the Lord as a firstborn among the animals; whether it is an ox or a sheep, it belongs to the Lord. ¹ 

“‘If he cannot afford an animal from the flock, ¹  he must bring his penalty for guilt for his sin that he has committed, ²  two turtledoves or two young pigeons, ³  to the Lord, one for a sin offering and one for a burnt offering.

If she cannot afford a sheep, ¹  then she must take two turtledoves or two young pigeons, ²  one for a burnt offering and one for a sin offering, and the priest is to make atonement on her behalf, and she will be clean.’” ³