Behold! Thou didst say to one who had received the grace of God and thy favour: "Retain thou (in wedlock) thy wife, and fear God." But thou didst hide in thy heart that which God was about to make manifest: thou didst fear the people, but it is more fitting that thou shouldst fear God. Then when Zaid had dissolved (his marriage) with her, with the necessary (formality), We joined her in marriage to thee: in order that (in future) there may be no difficulty to the Believers in (the matter of) marriage with the wives of their adopted sons, when the latter have dissolved with the necessary (formality) (their marriage) with them. And God's command must be fulfilled. (33:37)