It is narrated from Sayyiduna Abu Umamah al-Bahili (may Allah be pleased with him) that he said: When the Prophet of Allah (peace and blessings be upon him) was sent, the troops of Iblis came to him and said: "A Prophet has been sent and his Ummah has emerged." Iblis asked: "Do they love the world?" They said: "Yes." He said: "If they love the world, then I do not care whether they do not worship idols. They will never escape from me; morning and evening I will overpower them through three ways: acquiring wealth unlawfully, spending it in the wrong place, and withholding it from the rights due upon it. And all evil follows on from these." This hadith has a sahih (authentic) chain of narration, but the two Shaykhs (Bukhari and Muslim) did not record it.