Sunan An-Nasa'i

It was narrated that 'Aishah said:""The Messenger of Allah came to me and there was a Jewish woman with me who was saying: 'You will be tested in your graves.' The Messenger of Allah got upset and said: 'Rather the Jews will be tested.""' 'Aishah said: ""A few nights later, the Messenger of Allah said: 'It has been revealed to me that you will be tested in your graves.""' 'Aishah said; ""Afterward I heard the Messenger of Allah seeking refuge with Allah from the torment of the grave