Musannaf Ibn Abi Shaybah 32625 — Reports on talk about rulers

Asim said: I never saw Abu Wa'il (may Allah have mercy on him) revile any living creature that walks the earth except al-Hajjaj. Once he mentioned his evil deeds and said: "O Allah, feed al-Hajjaj from the thorny plant called dari' a food that neither fattens nor relieves hunger." He said: Then, by way of making amends, he said: "If You should be pleased with this." I said: "Do you still have doubt about al-Hajjaj?" He said: "Do you regard adding this as a sin?"