(13) Marriage
كتاب النكاح
(11a) Chapter: Separating from a Wife for a Compensation ; and Divorce - Section 1
(11) باب الخلع والطلاق
Mishkat al-Masabih 3276 
‘A’isha said that God’s Messenger gave them their choice and they chose God and His Messenger; so that was not reckoned as counting in any way to their divorce. (Bukhari and Muslim.)
وَعَنْ عَائِشَةَ قَالَتْ: خَيَّرَنَا رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَاخْتَرْنَا اللَّهَ وَرَسُولَهُ فَلَمْ يَعُدَّ ذَلِكَ عَلَيْنَا شَيْئًا
 مُتَّفَقٌ عَلَيْهِ  (الألباني)حكم :
Reference : Mishkat al-Masabih 3276
In-book reference : Book 13, Hadith 192