"I saw the Messenger of Allah while he was dying. He had a cup with water in it, he put his hand in the cup then wiped his face with the water, then said: 'O Allah! Help me with the throes of death and the agony of death.'"
حَدَّثَنَا قُتَيْبَةُ، حَدَّثَنَا اللَّيْثُ، عَنِ ابْنِ الْهَادِ، عَنْ مُوسَى بْنِ سَرْجِسَ، عَنِ الْقَاسِمِ بْنِ مُحَمَّدٍ، عَنْ عَائِشَةَ، أَنَّهَا قَالَتْ رَأَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم وَهُوَ بِالْمَوْتِ وَعِنْدَهُ قَدَحٌ فِيهِ مَاءٌ وَهُوَ يُدْخِلُ يَدَهُ فِي الْقَدَحِ ثُمَّ يَمْسَحُ وَجْهَهُ بِالْمَاءِ ثُمَّ يَقُولُ " اللَّهُمَّ أَعِنِّي عَلَى غَمَرَاتِ الْمَوْتِ " . أَوْ " سَكَرَاتِ الْمَوْتِ " . قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ غَرِيبٌ .
Tirmizi
The Book on Jana''iz (Funerals) • Hadith 979