at-Tirmidhi

“Ka'b ibn Malik reported that the Messenger of Allah, may Allah bless him and grant him peace, said, "Two hungry wolves loose among sheep do not cause as much damage as that caused to a man's deen by his greed for money and reputation.”

“Ibn Mas'ud reported that the Messenger of Allah, may Allah bless him and grant him peace, said, "Shall I tell you who is unlawful for the Fire - or the one for whom the Fire is unlawful? It is unlawful for everyone who is easy, flexible, modest and uncomplicated.”