It is narrated from Hazrat Anas (may Allah be pleased with him) that a funeral passed in front of the Prophet (peace and blessings be upon him), and someone praised the deceased, and the people praised him. The Prophet (peace and blessings be upon him) said, "It has become obligatory." Then another funeral passed, and the people spoke ill of the deceased. The Prophet (peace and blessings be upon him) said, "It has become obligatory." Then he said, "You are Allah's witnesses on the earth."