At-Tawbah · 9:34

 34. O you who believe! Verily, there are many of the (Jewish) rabbis and the (Christian) monks who devour the wealth of mankind in falsehood, and hinder (them) from the Way of Allâh (i.e. Allâh’s religion of Islâmic Monotheism). And those who hoard up gold and silver [Al-Kanz: the money, the Zakât of which has not been paid] and spend them not in the Way of Allâh, announce unto them a painful torment.