Muwatta Malik, Book 38, Hadith 1479 (In-Book) ⓘ

Malik related to me that Yahya ibn Said said, ''Abd ar-Rahman ibn Abi Bakr died in his sleep, and A'isha, the wife of the Prophet, may Allah bless him and grant him peace, set free many slaves for him." Malik said, "This is what I like best of what I have heard on the subject."

وَحَدَّثَنِي مَالِكٌ، عَنْ يَحْيَى بْنِ سَعِيدٍ، أَنَّهُ قَالَ تُوُفِّيَ عَبْدُ الرَّحْمَنِ بْنُ أَبِي بَكْرٍ فِي نَوْمٍ نَامَهُ فَأَعْتَقَتْ عَنْهُ عَائِشَةُ زَوْجُ النَّبِيِّ صلى الله عليه وسلم رِقَابًا كَثِيرَةً ‏.‏ قَالَ مَالِكٌ وَهَذَا أَحَبُّ مَا سَمِعْتُ إِلَىَّ فِي ذَلِكَ ‏.‏