Is this right ---?
Some people of knowledge mentioned that Abdullah bin Saba' was a Jew, who embraced Islam and supported Ali. While he was still a Jew, he used to go to extremism in calling Yousha' bin Noon as the appointee (successor) of Moses, thus after embracing Islam - after the demise of the Messenger of Allah [pbuh&hf] - he said the like about Ali. It was him who first publicly announced the mandatory Imamah for Ali, rejected and disowned his enemies, debated his opponents and called them Kafirs. Hence, those who oppose the s**+'ites often say: The s**+'ites and Rejectors (Rafidah) have their roots in Judaism" [Rijaal al-Kash-s**+, p.101; Al-Mamaqaani, author of Tanqeeh al-Maqaal, who is an authoritative s**+'i biogrophist quoted the like in page 184 his said book]
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