It is narrated from Sayyiduna Abu Hurairah, may Allah be pleased with him, he says: One day we were sitting in the company of the Messenger of Allah, peace and blessings be upon him, when we heard a loud thud of something falling. The Messenger of Allah, peace and blessings be upon him, asked: Do you know what sound this is? We said: Allah and His Messenger know best. He, peace and blessings be upon him, said: This is the sound of a stone, which was thrown into Hell seventy years ago, and it has now reached its bottom.