It is narrated from Hazrat Abu Saeed Khudri (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: A neck will emerge from Hell which will say, "I have been appointed over three types of people today: every oppressor, those who associate others with Allah, and those who kill someone unjustly." Then it will seize all of them and throw them into the depths of Hell.