Sahih Muslim 2435
Sahih Muslim · Book 44: The Book of the Merits of the Companions · The Virtues Of Khadijah, The Mother Of The Believers (RA)
'A'isha reported:
حَدَّثَنَا عَبْدُ بْنُ حُمَيْدٍ ، أَخْبَرَنَا عَبْدُ الرَّزَّاقِ ، أَخْبَرَنَا مَعْمَرٌ ، عَنِ الزُّهْرِيِّ ، عَنْ عُرْوَةَ ، عَنْ عَائِشَةَ ، قَالَتْ مَا غِرْتُ لِلنَّبِيِّ صلى الله عليه وسلم عَلَى امْرَأَةٍ مِنْ نِسَائِهِ مَا غِرْتُ عَلَى خَدِيجَةَ لِكَثْرَةِ ذِكْرِهِ إِيَّاهَا وَمَا رَأَيْتُهَا قَطُّ .
Never did I feel jealous of any wife amongst the wives of Allah's Apostle (ﷺ) as I feel in case of Khadija (though I had never seen her), for he praised her very often.