Musannaf Ibn Abi Shaybah

Hazrat Abdullah says that when a person is lowered into the grave, if he is among the fortunate ones, Allah Almighty strengthens his heart for the questions and answers. He is asked, "Who are you?" He says, "In the state of life and in the state of death, I am a servant of Allah, and I bear witness that there is no god but Allah and that Muhammad (peace and blessings be upon him) is the Messenger of Allah." It is said to him, "You were indeed like this." Then his grave is expanded as much as Allah wills, and a door to Paradise is opened for him, and the fragrance and breeze of Paradise enter upon him, until he is raised again. And another person is brought to the grave, and he is asked, "Who are you?" This question is asked three times. He says, "I do not know." It will be said to him, "You did not even know." This will be said three times. Then his grave will be made so tight for him that his body and ribs will be pressed together, and many snakes will be let loose upon him from the side of the grave, which will bite and eat him. Whenever he screams and cries, he will be struck with an iron or fire hammer, and a door to Hell will be opened for him.