21. " and how can you take it (back) when one of you has already gone in to the other and they have taken from you a firm covenant ? " commentary: this verse indicates that in the fulfilment of propagations and forbidding wrong, human's affections should be utilized either. (you that, for a long time, have had a whole relationship with your wife and have obtained your wishes, why do you take back her dower unjustly now ? ) then, at the time of misfortunes of life, former pleasures should be remembered, too. " and how can you take it (back) when one of you has already gone in to the other? ..." the marriage contract is a firm covenant; therefore, breach of promise is not proper. "... and they have taken from you a firm covenant."