Berean Study Bible (BSB) - 2 Kings 14:6 >

Yet he did not put the sons of the murderers to death, but acted according to what is written in the Book of the Law of Moses, where the LORD commanded: “Fathers must not be put to death for their children, and children must not be put to death for their fathers; each is to die for his own sin.”

Jewish Publication Society of America Version (JPS1917) - 2 Kings 14:6 >

but the children of the murderers he put not to death; according to that which is written in the book of the law of Moses, as the LORD commanded saying: 'The fathers shall not be put to death for the children, nor the children be put to death for the fathers; but every man shall be put to death for his own sin.'