It is reported that Al-Fudayl b. ‘Ayyâd said, “When backbiting appears, brotherhood for Allâh will disappear; and at that time you will be like things plated with gold and silver: wooden on the inside, [merely] looking good on the outside.”

Abû Nu’aym, Hilyah Al-Awliyâ`, Vol. 3 p395.