It is narrated from Sayyiduna Bilal bin Harith (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "A man utters a word, not knowing how far its effect will reach, and because of it Allah writes His pleasure for that servant until the Day of Resurrection. And he utters a word, not knowing how far its effect will reach, and because of it Allah writes His displeasure for that servant until the Day of Resurrection."