Sahih Bukhari
Good Manners and Form (Al-Adab)
Volume: 008 / Book Number: 073 / Hadith Number: 56
Narrated Masruq:
Abdullah bin 'Amr mentioned Allah's Apostle saying that he was neither a Fahish nor a Mutafahish. Abdullah bin 'Amr added, Allah's Apostle said, 'The best among you are those who have the best manners and character.'