أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ يَحْيَى، عَنْ عَمْرَةَ، عَنْ عَائِشَةَ، أَنَّ النَّبِيَّ صلى الله عليه وسلم كَانَ يَسْتَعِيذُ مِنْ عَذَابِ الْقَبْرِ وَمِنْ فِتْنَةِ الدَّجَّالِ وَقَالَ ‏"‏ إِنَّكُمْ تُفْتَنُونَ فِي قُبُورِكُمْ ‏"‏ ‏.‏

It was narrated from Aishah that: the Prophet used to seek refuge with Allah from the torment of the grave and the trial of the Dajjal, and he said: "You will be tested in your graves." Translation Not Available

Book Ref: Sunan An Nisai Book 21 Hadith 2065
Web Ref:  Sunan An Nisai Vol 3 Book 21 Hadith 2067