Sunan Abi Dawud 4316
سنن أبي داود#4316SahihAnas b. Malik reported the Prophet (ﷺ) as saying:No prophet was sent who had not warned his people about the one-eyed. Between his eyes will be written “infidel” (kafir)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Zubair Ali ZaiSahih Bukhari (7131) Sahih Muslim (2933)
In-book reference: 39:26