
And every firstling of an ass thou shalt redeem with a lamb; and if thou wilt not redeem it, then thou shalt break his neck: and all the firstborn of man among thy children shalt thou redeem.
You must buy the first baby donkey with a lamb. If you don't buy it, you must break its neck. Also, you need to buy the first child born in your family.
* Work in progress - there may be occasional inaccuracies