And Sufyan Thawri narrated via: «عاصم عن أبي رزين عن ابن عباس» (as a mawquf narration), he says: There is no prescribed punishment (hadd) for one who has intercourse with an animal («وطی»). This hadith was narrated to us by Muhammad bin Bashar with the chain «عبدالرحمٰن بن مهدي حدثنا سفيان الثوري», and it is more authentic than the first hadith 1؎. 2- The scholars act upon this 2؎, and this is also the opinion of Ahmad and Ishaq bin Rahwayh.
´Narrated Ibn 'Abbas:` That the Messenger of Allah (ﷺ) said: "Whomever you see having relations with an animal then kill him and kill animal." So it was said to Ibn 'Abbas: "What is the case of the animal?" He said: "I did not hear anything from the Messenger of Allah (ﷺ) about this, but I see that the Messenger of Allah (ﷺ) disliked eating its meat or using it, due to the fact that such a (heinous) thing has been done with that animal."
Hadith Referenceسنن ترمذي / كتاب الحدود عن رسول الله صلى الله عليه وسلم / 1455
Hadith Gradingالألبانی:حسن صحيح، ابن ماجة (2564)
Hadith Takhrij«سنن ابی داود/ الحدود 29 (3062) ، سنن ابن ماجہ/الحدود 13 (4464) ، ( تحفة الأشراف : 6176) ، و مسند احمد (1/269، 300 (حسن صحیح)»
1؎ : That is, the narration of Asim which is mawquf from Ibn Abbas is more authentic than the narration of Amr ibn Abi Amr which has been mentioned previously.
2؎ : That is, their practice is upon the mawquf narration of Asim, that there is no prescribed punishment (hadd) upon the one who has intercourse with an animal.