Also, reporting his refutation of his opponents, He says:...

Also, reporting his refutation of his opponents, He says: And that is Our argument, which We gave Ibrahim as against his people, We raise up in degrees whom We will [6:83]. Also, commanding His Prophet (Muhammad), peace be upon him and his progeny, to argue with. his opponents, He says: Say: "Have you any knowledge, for you to bring forth for us?" [6:148].

And He, Exalted be His Name, says: All food was lawful to the Children of Israel [3:93], and telling His Prophet, says: Whoever then disputes with thee in this matter after the knowledge that has come to thee [3:61].

Moreover, the Imams still continued to debate the religion of Allah, and the learned amongst their followers in every age used to rely on sound argument and reasoned proofs in their polemics, in order to establish the truth and refute the false, and the Imams always praised them for that, and appreciated their efforts highly in this respect.

Chapter: al-Kulayni[^1] , may Allah have mercy upon him, relates in his book, al-Kafi, which is one of the most admirable books of the Shi‘ah, the discussion Yunus ibn Ya‘qub[^2] had with Abu ‘Abdillah, peace be upon him, when the Shami[^3] came to dispute with him. Abu ‘Abdillah said to him: "O Yunus! I wish that you had mastered speculative theology (kalam)"; thereupon Yunus replied: "May I be made your ransom!

I have heard that you have forbidden people to dispute and that you have said; 'Woe unto those who indulge in dialectics, who say this is a tenable proposition and this is not, this consistent, and this not, and this is conceivable and this is not.' "Then Abu ‘Abdillah said: "I called woe upon them if they abandoned my teaching and clung to what is opposite to it." Then he asked Humran ibn A‘yan[^4] , Muhammad ibn at- Tayyar[^5] , Hisham ibn Salim[^6] and Qays al-Masir[^7] to hold a debate before him and afterwards Hisham[^8] (ibn al-Hakam) came forward with his thesis (lit.