This Is My Faith - Al-fatlawi, Ali - الصفحة ٣١٣ - Words on Claiming His Mediation
Ahmad Bin Matil was sitting near his head and Abu Al-Qasim Bin Rouh was near his legs. He turned his face to Ja’far Bin Ahmad Bin Matil and said: ‘I have been ordered to appoint Abu Al-Qasim Al-Husain Bin Rouh; thus, Ja’far Bin Ahmad Bin Matil took the hand of Abu Al-Qasim Al-Husain Bin Rouh and gave him his place and he moved to sit next to his legs.
When his health deteriorated, a group of prominent Shi’a gathered and went to Abu Ja’far’s – God bless his soul – and asked him: ‘Who will be in place of you if something happens?’ He replied: ‘This is Abu Al-Qasim Al-Husain Bin Rouh Bin Abu Bahr Al-Nobakhti; he is in charge instead of me. He is the Ambassador between you and the Imam; he is trustworthy and reliable, so refer to him in your affairs and count on him in your duties. This I was ordered to announce and I just did so’
Abu Al-Qasim – God bless his soul – was considered one of the wisest people to both opponents and proponents; Abu Al-Qasim instituted Abu Al-Hasan Ali Bin Mohammad Al-Simri – God bless his soul – as he carried out what Abu Al-Qasim was doing. In his death