H 336 - The narrator says: I heard from Abul Hasan Ali bin Bilal bin Muawiyah Mahlabi that he said about the life of Ja’far bin Muhammad bin Quluwayh that he heard from Abul Qasim Ja’far bin Muhammad bin Quluwayh that he said on the authority of Ja’far Ibn Ahmad Ibn Matil Qummi that Muhammad Ibn Uthman Abu Ja’far Amari had about ten people in Baghdad who were his deputies. Abul Qasim Ibn Ruh was one of them. All of them were closer to him than Abul Qasim Ibn Ruh so much so that when he needed something or had a task, he would have it fulfilled through someone else, because Ibn Ruh did not have that kind of proximity to him. When Abu Ja’far was to pass away, the choice was his and he had the authority to make his final will.