Narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) said: "A person may utter a word that pleases Allah, without giving it any importance, and because of that Allah raises his ranks. And (sometimes) a person may utter a word that angers Allah, and he does not consider it a major sin, yet because of that he falls into Hell."