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. - At-Tirmidhī -أبو عيسى الترمذي
Yahya related to me from Malik that he heard that the Messenger of Allah, may Allah bless him and grant him peace, said, "I have left two things with you. As long as you hold fast to them, you will not go astray. They are the Book of Allah and the Sunnah of His Prophet. - according to the Muwatta by Malik ibn Anas
Success advances the man's cause, adversity cleans the man's soul. - Malik