Sahih al-Bukhari 4788
Narrated Aisha:
I used to look down upon those ladies who had given themselves to Allah's Messenger (ﷺ) and I used to say, 
"Can a lady give herself (to a man)?" But when Allah revealed: "You (O Muhammad) can postpone 
(the turn of) whom you will of them (your wives), and you may receive any of them whom you will; 
and there is no blame on you if you invite one whose turn you have set aside (temporarily).' (33.51) I 
said (to the Prophet), "I feel that your Lord hastens in fulfilling your wishes and desires."
حَدَّثَنَا زَكَرِيَّاءُ بْنُ يَحْيَى، حَدَّثَنَا أَبُو أُسَامَةَ، قَالَ هِشَامٌ حَدَّثَنَا عَنْ أَبِيهِ، عَنْ عَائِشَةَ ـ رضى الله عنها ـ قَالَتْ كُنْتُ أَغَارُ عَلَى اللاَّتِي وَهَبْنَ أَنْفُسَهُنَّ لِرَسُولِ اللَّهِ صلى الله عليه وسلم وَأَقُولُ أَتَهَبُ الْمَرْأَةُ نَفْسَهَا فَلَمَّا أَنْزَلَ اللَّهُ تَعَالَى ‏{‏تُرْجِئُ مَنْ تَشَاءُ مِنْهُنَّ وَتُؤْوِي إِلَيْكَ مَنْ تَشَاءُ وَمَنِ ابْتَغَيْتَ مِمَّنْ عَزَلْتَ فَلاَ جُنَاحَ عَلَيْكَ‏}‏ قُلْتُ مَا أُرَى رَبَّكَ إِلاَّ يُسَارِعُ فِي هَوَاكَ‏.‏