Syedna Abu Hurairah (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings be upon him) saw a man drinking water while standing. The Prophet (peace and blessings be upon him) said to him: "Vomit it out." He asked: "Why?" The Prophet (peace and blessings be upon him) said to him: "Do you like that a cat drinks water with you?" He replied: "No." The Prophet (peace and blessings be upon him) said: "Then someone has drunk water with you who is worse than that cat, and that is Satan."