Комментарий к Тегилим 128:6

And may you see children [born] to your children and they shall not come to quarrel about halitzah, [since that is performed only if there are no children,] and then there will be peace upon Israel (addendum).

children [born] to your children They will inherit the estate, and no woman will be subject to the levir [in a levirate marriage]. Then there will be peace in the world.