Seventh divinely appointed infallible Imam of Twelver Shia, Musa ‘al-Kadhim’ was not knowledgeable – as per Shia narrations.
By brother al-a3sha
The famous Shia narrator Abu Baseer attested to the fact that Al-Khadem was not very knowledgable. Al-Khoei said in Rijal Al-Hadith Vol 15 p. 154:
“Al-Shayk (i.e Al-Tusi) narrated this last narration through an isnad which could be considered, with a slight change in wording. He narrated through his isnad upto Ali Ibn Al-Hassan from Shuayb Al-Aqerkufi he said:” I asked Abu Al-Hassan (a.s)”… until he said: “and then I mentioned that to Abu Baseer (i.e the fatwa of Al-Khadem which is detailed in the next narration) so he said to me: by Allah Jafar (a.s) said: The woman is to be stoned and the man is to be flogged a hundred times as Hadd. And then he took his hands and placed them over his chest scratching it and saying: I do not think that the knowledge of one we are following has become complete yet (i.e referring to Al-Khazim).”
(Ref,: Al-Tahdeeb Vol 7. Chapter on additional (topics) with regards to Fiqdh of Marriage, Hadith # 1957, as well as Al-Istibsar Vol 3, Chapter on Man marrying a woman and then knowing after having relation with her that she has a husband. Hadith # 687)
He also narrated the content of this hadith through his chain upto Ahmad Ibn Muhammad from Ibn Abi Umair from Shuaib that he said: I asked Abu Al-Hassan (a.s) about a man marrying a married woman. He said: They have to be separated. I asked: Is he to be flogged? He said: No , he is not to be flogged. So I departed him, while Abu Baseer was next to the Meez-ab (i.e of the Kaaba) so I informed him about the question and answer. He said to me: Where am I? I said: you are next to the Meez-ab. He then lifted his hand and said: By the Lord of this House , or by the Lord of this Kaaba, I have heard Jafar say that Ali (a.s) gave a judgment about the man marrying a married woman that the woman be stoned and the man be flogged as Hadd. He then said: Had I known that you have known I would have bruised your head with stones. He then said: I am so scared that he (i.e Al-Khadem ) was not given his knowledge.
(Ref: Al-Tahdeeb Vol 10 Chapter on Hudud of adultery, hadith # 76)”