Deuteronomy 25:11-12 

When men strive together one with another, and the wife of the one draweth near for to deliver her husband out of the hand of him that smiteth him, and putteth forth her hand, and taketh him by the secrets 

Then thou shalt cut off her hand, thine eye shall not pity her.

This one only seems to apply to women whose husbands are being attacked.  Also, you may be able to buy your way back into heaven in exchange for your hand.  It’s a bit unclear on that point, though it’s eerily specific on the rest of the scenario.  Makes me wonder if the author’s friend had this happen to him once, and requested it be inserted into the teachings as a special favor.

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