It is narrated from Sayyiduna Abu Sa'id Khudri, may Allah be pleased with him, that the Messenger, peace and blessings be upon him and his family, said: Ninety-nine serpents are set upon the disbeliever in the grave, which continue to bite him until the Day of Resurrection. (They are so venomous that) if one of those serpents were to blow on the earth, it would never produce vegetation.

It is narrated from Sayyida Aisha (may Allah be pleased with her) that the Messenger of Allah (peace and blessings be upon him) said: Two snakes are let loose upon the disbeliever, one from the direction of his head and the other from the direction of his feet. Both keep biting him repeatedly; when they finish once, they return again. This continues until the Day of Resurrection.

Sayyiduna Anas bin Malik (may Allah be pleased with him) narrates: Once, the Messenger of Allah (peace and blessings be upon him) went to the date orchard of Sayyiduna Abu Talha (may Allah be pleased with him) to relieve himself. Sayyiduna Bilal (may Allah be pleased with him), out of respect for the Prophet (peace and blessings be upon him), was walking behind him, not side by side. The Prophet (peace and blessings be upon him) passed by a grave and stopped there, until Sayyiduna Bilal (may Allah be pleased with him) came close to him. The Prophet (peace and blessings be upon him) said: "Bilal! You would be destroyed, are you hearing what I am hearing?" He replied: "I am not hearing anything." The Prophet (peace and blessings be upon him) said: "The occupant of this grave is being punished." Then, when inquiry was made about him, it was found that he was a Jew.

Sayyiduna Abu Ayyub Ansari (may Allah be pleased with him) narrates that once the Noble Prophet (peace and blessings be upon him) went outside after sunset and, upon hearing a sound, said: The Jews are being punished in their graves.