Musannaf Ibn Abi Shayba 37:622

Abu Usama narrated to us, from al-A’mash, from Abu Wa’il, who said: I entered upon Ubayd Allah ibn Ziyad in Basra, and the jizya of Isfahan had been brought to him—three million—and it was placed before him. He said: "O Abu Wa’il, what do you say about one who dies and leaves behind the likes of this?" I said—alluding to him—: "How is it if it is from ghulul (ill-gotten gains)?" He said: "That is evil upon evil." Then he said: "O Abu Wa’il, when I arrive in Kufa, come to me, perhaps I may bestow some good upon you." He said: So he arrived in Kufa. He said: I went to Alqama and informed him. He said: "As for you, had you gone to him before consulting me, I would not have said anything to you. But since you have consulted me, it is my duty to advise you." He said: "I would not like to have two thousand [dirhams] from two thousand [dirhams], even if I were the most honored of the soldiers to him, for I do not obtain anything from their worldly life except that they obtain more than it from my religion."