Sahih Muslim , Book 31, Hadith 5986 (USC-MSA) ⓘ

A'isha reported that Allah's Messenger at the time of breathing his last was reclining against her chest and she was leaning over him and listening to him as he was saying: O Allah, grant me pardon, show mercy to me, enjoin me to companions (on High).

حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، عَنْ مَالِكِ بْنِ أَنَسٍ، فِيمَا قُرِئَ عَلَيْهِ عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ عَبَّادِ بْنِ عَبْدِ اللَّهِ بْنِ الزُّبَيْرِ، عَنْ عَائِشَةَ، أَنَّهَا أَخْبَرَتْهُ أَنَّهَا، سَمِعَتْ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ قَبْلَ أَنْ يَمُوتَ وَهُوَ مُسْنِدٌ إِلَى صَدْرِهَا وَأَصْغَتْ إِلَيْهِ وَهُوَ يَقُولُ ‏ "‏ اللَّهُمَّ اغْفِرْ لِي وَارْحَمْنِي وَأَلْحِقْنِي بِالرَّفِيقِ ‏" ‏ ‏.‏