Parallel
Exodus 34:20
Brenton's English Septuagint · Berean Standard Bible
And the first-born of an ass thou shalt redeem with a sheep, and if thou wilt not redeem it thou shalt pay a price: every first-born of thy sons shalt thou redeem: thou shalt not appear before me empty.
You must redeem the firstborn of a donkey with a lamb; but if you do not redeem it, you are to break its neck. You must redeem all the firstborn of your sons. No one shall appear before Me empty-handed.