Muhammad ibn al- Hassan has narrated from 'Abdallah ibn al-Hassan al-'Alawi and Ali ibn Ibrahim from al-Mukhtar ibn Muhammad ibn al-Mukhtar al-Hmadini altogether from al- Fath ibn Yazid who
has said the following.
"I asked Imam abul Hassan (a.s.), "What is the minimum required degree of knowledge about Allah?" The Imam said, "To acknowledge that there is no other lord besides Him and that nothing is
similar to and like Him and that He is eternal, positively existing and not absence and that nothing is like Him."
H 225, Ch. 4, h 2
Ali ibn Ibrahim has narrated from Sahl ibn Ziyad, from Tahir ibn Hatam when he was normal and wrote to the man (meaning thereby Imam abul Hassan al-Rida (a.s.). "What is it that without
which one's acknowledgement of the existence of Allah can not be considered sufficient?"
In answer the Imam (a.s.) replied, "That He is All-knowing, All-hearing All-awareness and that He acts as He wills." Imam abu Ja'far (a.s.) was asked about the minimum required degree of
knowledge about Allah without which an acknowledgement would not be considered sufficient. The Imam (a.s.) said, "There is nothing similar to or like Him. He is Allknowing, All-hearing and
All-awareness."
H 226, Ch. 4, h 3
Muhammad ibn Yahya has narrated from Muhammad ibn al-Hassan from al-Hassan ibn Ali ibn Yusuf ibn Baqqah from Sayf ibn 'Umayra from Ibrahim ibn 'Umar who has said the following. Imam abu
'Abdallah (a.s.) has said, "The issue about Allah is totally extraordinary. Notice that He has presented to you His arguments in proof of His existence by means of that much of facts about His
own self that He has made known to you."