출애굽기 21:30의 주석

אם כפר יושת עליו WHEN THERE BE SET ON HIM A RANSOM — This אם is not conditional (i. e. it does not mean “if” the heirs feel inclined to set on him a ransom) but it has the same meaning as in (Exodus 22:24) “When (אם) thou lendest money” where it has the meaning of אשר, “when” (for it is a duty to lend money to the poor and it is not optional). It is the law regarding him that the court should set on him a ransom.

IF THERE BE LAID ON HIM A RANSOM, THEN HE SHALL GIVE FOR THE REDEMPTION OF HIS LIFE WHATSOEVER IS LAID UPON HIM. Since the redemption is a form of atonement¹⁷⁸“An atonement for the owner whose ox killed a man” (Rashi Makkoth 2 b). as are the offerings, and if the owner does not desire it we cannot force him to come before the court to impose the ransom on him, and even if the court ordered him to pay it, we cannot seize his goods as security, therefore He said: “if.”

אם כופר יושת עליו, if witnesses testify in a manner that enables the court to apply the laws of compensation as a means of atonement.