Sunan Abi Dawud 3042
سنن أبي داود#3042HasanIbn ‘Abbas said “When the Prophet of the Persians dies, Iblis (satan) led them to Mazdaism.”
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniHasan Isnaad
Muhammad Muhyi Al-Din Abdul HamidHasan Isnaad
Zubair Ali ZaiIsnaad Hasan
In-book reference: 20:115