Language:
كتاب النكاح
67  
Wedlock, Marriage (Nikaah)
(109)
Chapter: The jealousy of women and their anger
(108)
باب غَيْرَةِ النِّسَاءِ وَوَجْدِهِنَّ
Sahih al-Bukhari 5229

Narrated `Aisha:

I never felt so jealous of any wife of Allah's Messenger (ﷺ) as I did of Khadija because Allah's Messenger (ﷺ) used to remember and praise her too often and because it was revealed to Allah's Messenger (ﷺ) that he should give her (Khadija) the glad tidings of her having a palace of Qasab in Paradise .

حَدَّثَنِي أَحْمَدُ بْنُ أَبِي رَجَاءٍ، حَدَّثَنَا النَّضْرُ، عَنْ هِشَامٍ، قَالَ أَخْبَرَنِي أَبِي، عَنْ عَائِشَةَ، أَنَّهَا قَالَتْ مَا غِرْتُ عَلَى امْرَأَةٍ لِرَسُولِ اللَّهِ صلى الله عليه وسلم كَمَا غِرْتُ عَلَى خَدِيجَةَ، لِكَثْرَةِ ذِكْرِ رَسُولِ اللَّهِ صلى الله عليه وسلم إِيَّاهَا وَثَنَائِهِ عَلَيْهَا، وَقَدْ أُوحِيَ إِلَى رَسُولِ اللَّهِ صلى الله عليه وسلم أَنْ يُبَشِّرَهَا بِبَيْتٍ لَهَا فِي الْجَنَّةِ مِنْ قَصَبٍ‏.‏
Reference : Sahih al-Bukhari 5229
In-book reference : Book 67, Hadith 162
USC-MSA web (English) reference : Vol. 7, Book 62, Hadith 156
  (deprecated numbering scheme)