The research on "narratives" of Obaidullah bin Zahr on the authority of Ali bin Yazid Al-Alhani on the authority of Al-Qasim bin Abdul Rahman on the authority of Abi Umamah, may God be pleased with him "collect and study" is summarized in an inventory of these narratives from the books of the year, which amounted to seventy-eight (78) narrations.Including: What trustworthy trusts agreed in it, and...