It says in Haq al-Yaqin of Mullah Baqir Majlisi, a Shia mujtahid and a favorite of Khomeini,

“People wrote to Imam Ali Naqi that are we required to know more than this that Nasibi considers Munafiq Awwal (First Munafiq – Sayyiduna Abu Bakar) and Daum (Second – Sayyiduna Umar) to be superior than Janab Amir (Sayyiduna Ali) and believes in their Imamat (Khilafat). Hadhrat replied, ‘Anyone who holds such a belief is a Nasibi’.”

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PS:Translated by brother Saad.