Sahl Ibn ZiyadAdmi relates: “Some of our friends wrote a letter to Imam Askari (a.s) saying: “‘Ali Ibn Hasakah claims to be one of your friends and followers, but is of the belief that you are Allah and he is the ‘door’ that leads to you and the Noble Prophet (s.a.w). He is of the opinion that prayers, fasts, zakat and Hajj are nothing but your marifat and according to him, whoever holds this belief is a true and perfect Mu’min and is then relieved of the responsibility of performing the other acts like prayers and fasts.”
In reply, the Imam (a.s) wrote: “‘Ali Ibn Hasakah lies. May the curse of Allah be upon him! I do not consider him to be of my friends. By Allah! Muhammad (s.a.w) and the prophets before him had been sent to preach monotheism and invite the people towards prayers, fasts, zakat, Hajj and wilayah. Never did Muhammad (s.a.w) ever invite anyone towards polytheism, and all of us are the successors of the Noble Prophet (s.a.w) and the servants of Allah, and never do we ascribe partners to Him. If you happen to see one of them, smash his head by means of a stone (due to his polytheistic views).””
‘Ali Ibn Hasakah was of the Ghulat (The Extreme Shiites), who possessed deviated beliefs and had nurtured students such as Qasim Sharani, Yaqtini, Ibn Baba and Muhammad Ibn Musa Sharifi. The Imam (a.s) his rejection of their polytheistic beliefs when he announced: “I absolve myself from them; May Allah curse them!” ( Shagirdan-e-Maktab-e-Aimmah, pg. 13; Rijal Kashi, pg. 435 )