עַ֚יִן תַּ֣חַת עַ֔יִן שֵׁ֖ן תַּ֣חַת שֵׁ֑ן יָ֚ד תַּ֣חַת יָ֔ד רֶ֖גֶל תַּ֥חַת רָֽגֶל׃
mata kapalit ng mata, ngipin kapalit ng ngipin, kamay kapalit ng kamay, paa kapalit ng paa,
Mishneh Torah, One Who Injures a Person or Property
Damage, in what manner? If he chopped off the hand or the foot of his fellow, we look at [the fellow] as if he was a slave being sold in the marketplace: how much was he worth [then] and how much is he worth now. And he pays the depreciation of his value that he caused. As it is stated, "An eye for (tachat) an eye" - from the tradition, they learned that that which it states, "for (tachat)" means to pay money.
Mishneh Torah, One Who Injures a Person or Property
And from where [do we know] that that which it states with regards to limbs, "An eye for an eye," is [to be understood as] payments? Since it is stated about it, "A wound for a wound," and it is explicitly stated, "And when a man strikes his neighbor with a stone or with a fist, etc... he should surely give him his rest and his rehabilitation." Behold, you have learned that "for (tachat)" mentioned with regards to a wound means payments. And this is [also] the case with "for (tachat)" mentioned concerning the eye and concerning the other limbs.