Passage: Some later accounts claim that fear of prison made Abu Nuwas repent his old ways and become deeply religious, while others believe his later, penitent poems were simply written in hopes of winning the caliph's pardon. It was said that al-Ma'mun's secretary Zonbor tricked Abu Nuwas into writing a satire against Ali, the fourth Caliph and son-in-law of the Prophet, while Nuwas was drunk. Zonbor then deliberately read the poem aloud in public, and ensured Nuwas's continuing imprisonment. Depending on which biography is consulted, Abu Nuwas either died in prison or was poisoned by Ismail bin Abu Sehl, or both.

Question: abu nuwas was a victim of what?
either died in prison or was poisoned by Ismail bin Abu Sehl, or both