John Gill Bible Commentary

And if he smite out his manservant's tooth, or his maidservant's tooth,.... Give them such a slap on the face, or a blow on the mouth, as to strike out one of their teeth; this also the Targum of Jonathan and Jarchi restrain to a Canaanitish servant or maid: he shall let him go free for his tooth's sake; both him and her, the servant and the maid; this, though of lesser consequence than the loss of an eye, was punished in the same manner with the loss of the servant man or maid, to make masters careful how they abused their servants in any degree. And though only these parts are expressed, yet Jarchi and Aben Ezra observe, that all other principal members of the body, which they reckon to be twenty four, are included, as the fingers, toes, &c.