Exodus 21:30

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. ונתן פדיון נפשו HE SHALL GIVE THE RANSOM OF HIS SOUL — the value of the injured person; this is the view of R. Ishmael, R. Akiba, however, says that it means the value of the person who caused the injury (Mekhilta).

אִם־כֹּ֖פֶר יוּשַׁ֣ת עָלָ֑יו וְנָתַן֙ פִּדְיֹ֣ן נַפְשׁ֔וֹ כְּכֹ֥ל אֲשֶׁר־יוּשַׁ֖ת עָלָֽיו׃

If there be laid on him a sum of money, then he shall give for the ransom of his life whatever is laid upon him.