179. 1. Imam Muhammad al-Baqir (p): Talk and discuss about the creations of God but do not talk about the Supreme Self of God, since the discussion on the entity of God increases nothing except the discussant’s own intellectual perplexity.

180. 2. Imam Jafar as-Sadiq (p): God, the Mighty, the Great, says: And that the final end is to your Lord (Q, 53:42). So whenever your discussion comes to the point of the entity of God, end your talk at once.

181. 3. Imam Jafar as-Sadiq (p) addressed Muhammad, a believer:
People usually talk on every topic so much so that they even talk glibly about God Himself. When you hear them talking about God, you should tell them: There is no god but God, the One. Like unto Him there is no one else.

182. 4. Imam Muhammad al-Baqir (p): Beware of unwarranted religious discussion because they create doubts and misgivings and render the good deeds null and void and ruin the person indulging in them. The person may say something which can never be forgiven. There was a community in the past which neglected the acquisition of the knowledge enjoined on them and pursued a knowledge which was unnecessary for them. Subsequently their conversation reached the point of discussing (the shape and form of) God. They were perplexed to such an extent that if anyone called them from the front, they would reply to the rear, and if someone called them from the rear they would reply to the front.

183. 7. Imam Muhammad al-Baqir (p): Beware of pondering over (the form and shape, etc. of) God. However, if you want to marvel at His greatness, then look at the greatness of His creation.

184. 9. Imam Jafar as-Sadiq (p): A Jew came to the Prophet Muhammad (p) and said: O Messenger of God, I have come to you to ask you about your Lord-Sustainer. If you answer my question accurately, well and good, otherwise I shall go back.
Prophet Muhammad (p): Ask whatever you like.
The Jew: Where is your Lord?
The Prophet (p): He is everywhere and not confined within any space specified or limited.
The Jew: How is He?
The Prophet (p): How can I attribute the connotation of ‘how’ to my Lord (God) when the sense and connotations of how or state and mood are created by Him and God cannot be defined by any quality or sense and connotation created by Him.
The Jew further inquired: Then how can it be known that you are the Messenger of God?
At this point it so happened that there remained no one around Prophet Muhammad (p) except the Jew, at that time the stones spoke in clear Arabic language, “O Jew, he (Prophet Muhammad (p)) is the Messenger of God.”
The Jew: I have never seen anything so clearly demonstrated as this miraculous phenomenon.
And then he declared: I bear witness that verily there is no god but God and you (O Muhammad (p)) are the Messenger of God.