Narrated Abu Hurairah: Allah's Messenger () said: Anybody who believes in Allah and the Last Day should not injure his neighbor, and anybody who believes in Allah and the Last Day should engross his guest generously and anybody who believes in Allah and the Last Day should chat what is fine or save silent. (i.e. abstain from all kinds of evil and tainted speak). (Saheeh Al-Bukhari, Hadith 6018)