He had the honor of meeting with Imam al-Hadi (a.s.) and showing him his beliefs. He said to Imam al-Hadi (a.s.), ‘O son of the messenger of Allah, I want to show you my religion (beliefs). If it pleases you, I will fix on it.’
Imam al-Hadi (a.s.) smiled at him and said, ‘O Abul Qassim, speak out!’
Abdul Adheem said, ‘I say: there is nothing whatever like Allah the Almighty. He is free from the two limits; the limit of ta’til (making Allah a bare unity) and the limit of tashbih (the comparing of Allah to the creatures). He is neither a mass, nor a shape, nor a show, nor a substance, but He is the Embodier of masses, the Shaper of shapes, the Creator of shows and substances, the Lord, the Owner, the Maker, and the Former of all things.
Muhammad, His slave and messenger, is the last of prophets. There is no prophet after him until the Day of Resurrection, and his religion is the last of religions that there is no religion after it until the Day of Resurrection. And I say: the imam, caliph, and guardian after him (after the Prophet) is Ameerul Mo’minin Ali bin Abu Talib (a.s.), and then al-Hasan, and then al-Husayn, and then Ali bin al-Husayn, and then Muhammad bin Ali, and then Ja’far bin Muhammad, and then Musa bin Ja’far, and then Ali bin Musa, and then Muhammad bin Ali, and then you my master.’
Imam al-Hadi (a.s.) turned to him and said, ‘And after me is my son al-Hasan. What shall people do with the successor (Imam al-Mahdi) after him?’ Abdul Adheem said, ‘How is that my master?’
Imam al-Hadi (a.s.) said, ‘Because he shall not be seen, and it shall be not permissible to mention him by his name, until he will reappear to fill the world with justice and fairness after it is filled with injustice and oppression.’
Abdul Adheem said, ‘I acknowledge that and say: their guardian is the guardian of Allah, their enemy is the enemy of Allah, obeying them is the obedience of Allah, and disobeying them is the disobedience of Allah…and I say: the Prophet’s ascension (to the Heavens) is true, the questioning in the grave is true, the Paradise is true, the Hell is true, the Right Way (sirat) is true, the Scale is true, the Day of Resurrection will come undoubtedly, and Allah will resurrect all those in graves.
I say: the obligations after the guardianship (to the imams of the Ahlul Bayt) are prayer, fasting, zakat, hajj, jihad, enjoining the right, and forbidding the wrong.’
Imam al-Hadi (a.s.) said, ‘O Abul Qassim, by Allah this is the religion of Allah which He has determined for His people. Keep to it, may Allah fix you on the truth in this life and in the afterlife.
Reference : The Life of Imam ALI bin Muhammad AL-HADI