Adam Clarke on Ruth 4:6

I cannot redeem it for myself - The Targum gives the proper sense of this passage: "And the kinsman said, On this ground I cannot redeem it, because I have a wife already; and I have no desire to take another, lest there should be contention in my house, and I should become a corrupter of my inheritance. Do thou redeem it, for thou hast no wife; for I cannot redeem it." This needs no comment. But still the gloss of the Targum has no foundation in the law of Moses. See the law, Deu 25:5-9.