Your eye shall not pity: see verse 13, and 13.8.

Life for life, eye for eye, tooth for tooth, hand for hand, foot for foot: this should be expressed as concisely as possible, but the meaning should be quite clear. It should be stated generally and impersonally, in the manner of laws; for example, “One life shall be taken to pay for another life, one eye for another eye…,” and so forth. This legislation appears also in Exo 21.23-25; Lev 24.19-20.

Quoted with permission from Bratcher, Robert G. and Hatton, Howard A. A Handbook on Deuteronomy. (UBS Helps for Translators). New York: UBS, 2000. For this and other handbooks for translators see here .