Asim reported from Abu Razin on the authority of Ibn Abbas saying: There is no prescribed punishment for one who has sexual intercourse with an animal. Abu Dawud said: Ata is also so. Al Hakam said: I think he should be flogged, but the number should not reach the one of the prescribed punishment. Al-Hasan said: He is like a fornicator. Abu Dawud said: THe tradition of Asim proves the tradition of Amr bin Abi Amr as weak.
Explanation & Benefits
Shaykh Umar Farooq Saeedi
Benefits and Issues:
There is consensus among all on the prohibition of the aforementioned act of sodomy.
Regarding the perpetrator, both types of verdicts—hadd (prescribed punishment) or ta'zir (discretionary punishment)—are narrated from the jurists (fuqaha).
As for the animal, it is to be killed.
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 4465