Sahih al-Bukhari 7421
Narrated Anas bin Malik:
The Verse of Al-Hijab (veiling of women) was revealed in connection with Zainab bint Jahsh. (On the 
day of her marriage with him) the Prophet (ﷺ) gave a wedding banquet with bread and meat; and she used 
to boast before other wives of the Prophet (ﷺ) and used to say, "Allah married me (to the Prophet (ﷺ) in the 
Heavens."
حَدَّثَنَا خَلاَّدُ بْنُ يَحْيَى، حَدَّثَنَا عِيسَى بْنُ طَهْمَانَ، قَالَ سَمِعْتُ أَنَسَ بْنَ مَالِكٍ ـ رضى الله عنه ـ يَقُولُ نَزَلَتْ آيَةُ الْحِجَابِ فِي زَيْنَبَ بِنْتِ جَحْشٍ وَأَطْعَمَ عَلَيْهَا يَوْمَئِذٍ خُبْزًا وَلَحْمًا وَكَانَتْ تَفْخَرُ عَلَى نِسَاءِ النَّبِيِّ صلى الله عليه وسلم وَكَانَتْ تَقُولُ إِنَّ اللَّهَ أَنْكَحَنِي فِي السَّمَاءِ‏.‏