حَدَّثَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، عَنْ مُحَمَّدِ بْنِ جَعْفَرٍ، عَنْ شُعْبَةَ، ك ف ر ‏.‏

Shu’bah said in his version: “the letters k, f, r” (are on his forehead). Translation Not Available

Book Ref: Sunan Abi Dawud Book 39 Hadith 4317
Web Ref:  Sunan Abi Dawud Book 38 Hadith 4303