Muhammad ibn Umar
أبو عبدالله محمد بن عمر بن هياج
Fourth generation, died 255 AH in Hamadan. Named in the chains of 6 narrations of the library, 1 in Tirmidhi, 5 in Ibn Majah.
6narrations name him
2collections
255 AHhe died, in Hamadan
In the books of narrators: Truthful, صدوق.