DEUT362 Do not derive any pleasure or benefit from items that are offered to idols. A corollary principle, according to our Sages, is that alongside money and belongings that Hashem helps us to gain justly, we are prohibited to have money or objects that we stole, extorted, collected as interest, or gained by some other ugly means. Possessions such as these are rooted in physical desires and the evil inclination, and the name of idol worship is called upon them. If a person has idol worship amongst his possessions, or belongings such as these, it contaminates his assets, for Heaven's blessing will not rest on them, and he is bound to lose all that he has.