Abdullah ibn as-Sabbah
أبو علي عبد الله بن الصباح بن عبد الله
Fourth generation, died 250 AH in Basra. Named in the chains of 23 narrations of the library, 6 in Bukhari, 1 in Muslim, 3 in Abu Dawud.
23narrations name him
6collections
250 AHhe died, in Basra
In the books of narrators: Trustworthy, ثقة.