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."

It is also narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: Whoever drinks water while standing, if he knew what had entered his stomach, he would vomit.

Sayyiduna Anas bin Malik (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings be upon him) forbade a person from drinking water while standing. People said: We asked Sayyiduna Anas (may Allah be pleased with him): Can we eat while standing? He replied: Eating while standing is even worse and more foul than this. According to Ibn Bakr, this act is even more wicked.

Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) narrates that the Messenger (peace and blessings be upon him) forbade a person from drinking water while standing.

Sayyiduna Abu Zubair says: I asked Sayyiduna Jabir (may Allah be pleased with him) about the person who drinks water while standing, is this permissible? He said: We used to dislike it.

It is narrated from Sayyiduna Jabir (may Allah be pleased with him), who says: I heard Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) testifying that the Noble Prophet (peace and blessings be upon him and his family) forbade drinking water while standing, and also forbade us from facing the Qiblah while urinating.