﴿ وَإِذْ تَقُولُ لِلَّذِىٓ أَنْعَمَ ٱللَّهُ عَلَيْهِ وَأَنْعَمْتَ عَلَيْهِ أَمْسِكْ عَلَيْكَ زَوْجَكَ وَٱتَّقِ ٱللَّهَ وَتُخْفِى فِى نَفْسِكَ مَا ٱللَّهُ مُبْدِيهِ وَتَخْشَى ٱلنَّاسَ وَٱللَّهُ أَحَقُّ أَن تَخْشَىٰهُ ۖ فَلَمَّا قَضَىٰ زَيْدٌۭ مِّنْهَا وَطَرًۭا زَوَّجْنَٰكَهَا لِكَىْ لَا يَكُونَ عَلَى ٱلْمُؤْمِنِينَ حَرَجٌۭ فِىٓ أَزْوَٰجِ أَدْعِيَآئِهِمْ إِذَا قَضَوْا۟ مِنْهُنَّ وَطَرًۭا ۚ وَكَانَ أَمْرُ ٱللَّهِ مَفْعُولًۭا ﴾

“AND LO, [O Muhammad,] thou didst say unto the one to whom God had shown favour and to whom thou hadst shown favour, “Hold on to thy wife, and remain conscious of God!” And [thus] wouldst thou hide within thyself something that God was about to bring to light for thou didst stand in awe of [what] people [might think], whereas it was God alone of whom thou shouldst have stood in awe! [But] then, when Zayd had come to the end of his union with her, We gave her to thee in marriage, so that [in future] no blame should attach to the be­lievers for [marrying] the spouses of their adopted children when the latter have come to the end of their union with them. And [thus] God’s will was done.”

(And when thou saidst unto him on whom Allah hath conferred favour) through Islam, i.e. Zayd (and thou hast conferred favour) on him by emancipating him: (Keep thy wife to thyself) and do not divorce her, (and fear Allah) and fear Allah and do not let her go. (And thou didst hide in your mind) her love and the desire to marry her (that which Allah was to bring to light) in the Qur'an, (and thou didst fear mankind) and you feel ashamed of people because of this (whereas Allah had a better right that thou shouldst fear Him) whereas you should be ashamed of Allah. (So when Zayd had performed the necessary formality (of divorce) from her) when she has finished her waiting period after her divorce from Zayd, (We gave her unto thee in marriage, so that (henceforth)) after you (there may be no sin for believers about wives of their adopted sons, when the latter have performed the necessary formality (of release) from them) when they had finished their waiting period after they are divorced or after the death of their husband. (The commandment of Allah) marrying Zaynab to Muhammad (pbuh) (must be fulfilled) must take place.