حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ عَبَّادِ بْنِ عَبْدِ اللَّهِ بْنِ الزُّبَيْرِ، أَنَّ عَائِشَةَ، زَوْجَ النَّبِيِّ صلى الله عليه وسلم أَخْبَرَتْهُ أَنَّهَا سَمِعَتْ رَسُولَ اللَّهِ صلى الله عليه وسلم قَبْلَ أَنْ يَمُوتَ وَهُوَ مُسْتَنِدٌ إِلَى صَدْرِهَا وَأَصْغَتْ إِلَيْهِ يَقُولُ ‏"‏ اللَّهُمَّ اغْفِرْ لِي وَارْحَمْنِي وَأَلْحِقْنِي بِالرَّفِيقِ الأَعْلَى ‏"‏ ‏.‏

Yahya related to me from Malik from Hisham ibn Urwa from Abbadibn Abdullah ibn az-Zubayr that A'isha, the wife of the Prophet, mayAllah bless him and grant him peace, told him that she had heard theMessenger of Allah, may Allah bless him and grant him peace, saybefore he died, while he was leaning on her breast and she waslistening to him, "O Allah, forgive me and have mercy on me and joinme with the highest company." Translation Not Available

Book Ref: Muwatta Imam Malik Book 16 Hadith 568
Web Ref:  Muwatta Imam Malik Book 16 Hadith 46