Narrated Abu Huraira: Allah's Apostle said, "The signs of a hypocrite are three: Whenever he speaks, he tells a lie; and whenever he promises, he breaks his promise; and whenever he is entrusted, he betrays (proves to be dishonest)".
— Sahih Bukhari, Volume 8, Book 73: Good Manners and Form (Al-Adab), Hadith #117
