Narrater Abu Hurairah. Allah's Apostle said, Anybody who believes in Allah and the Last Day should not harm his neighbor, and anybody who believes in Allah and the Last Day should entertain his guest generously and anybody who believes in Allah and the Last Day should talk what is good or keep quiet.

Sahih Bukhari 8:73:47(Previous Reference for link only. Correct Ref: Bukhari Vol.8 Book78 Hadith6018) - Sunni Hadith