Sahih Bukhari Volume 008, Book 075, Hadith Number 377.
Narated By 'Aisha : Two old ladies from among the Jewish ladies entered upon me and said' "The dead are punished in their graves," but I thought they were telling a lie and did not believe them in the beginning. When they went away and the Prophet entered upon me, I said, "O Allah's Apostle! Two old ladies..." and told him the whole story. He said, "They told the truth; the dead are really punished, to the extent that all the animals hear (the sound resulting from) their punishment." Since then I always saw him seeking refuge with Allah from the punishment of the grave in his prayers.