Exodus 34:19-20

Webster_Strongs(i)
  19 H6363 All that openeth H7358 the womb H6363 is mine; and every firstling H4735 among thy cattle H7794 , whether ox H7716 or sheep H2142 [H8735] , {\i that is male}.
  20 H6363 But the firstling H2543 of a donkey H6299 [H8799] thou shalt redeem H7716 with a lamb H6299 [H8799] : and if thou shalt not redeem H6202 [H8804] him, then shalt thou break his neck H1060 . All the firstborn H1121 of thy sons H6299 [H8799] thou shalt redeem H7200 [H8735] . And none shall appear H6440 before H7387 me empty.