The meaning of terms mentioned in the Book and the Tradition about Monotheism

I said to Abu Abdillah, al-Sadiq, peace be upon him: «Allah is the Light of the Heavens and the earth» (24:35). He said: That is Allah, Exalted and Glorious is He. He said: I said: «the example of His Light» (24:35). He said: Muhammed, may Allah’s blessings be upon him and his Family. I said: «like a lantern» (24:35). He said: The chest of Muhammed, Allah’s blessings be upon him and his Family. I said: «in which there is a lamp» (24:35). He said: In it is the Light of Knowledge, that is Prophethood. I said: «the lamp is within a glass» (24:35). He said: The knowledge of Allah’s Messenger, Allah’s blessings be upon him and his Family, was issued to the heart of Ali, peace be upon him. I said: «as if it is» [2]. He said: For what thing are you reciting: «as if it is”?!» [3] I said: And how do I read it, may I be sacrificed for you? He said: «As if it [4] is a glimmering planet» (24:35). I said: «That is lit from a blessed olive tree, neither of the east, nor of the west» (24:35). He said: That is the Commander of the Believers, Ali bin Abi Talib, peace be upon him, neither a Jew nor a Christian. I said: «Its oil is about to glow, although it has not been touched by fire» (24:35). He said: It is as if knowledge is about to exit the mouth of the Knowledgeable from the Family of Muhammed, Allah’s blessings be upon him and his Family, before he utters it. I said: «Light upon Light» (24:35). He said: The Imam right after the Imam.

Indeed, the Messenger of Allah, Allah’s blessings be upon him and his Family, will on the Day of Resurrection grab hold of the Waist Cloth of Allah, and we will grab hold of the Waist Cloth of our Prophet, and our party [1] will grab hold of our Waist Cloth. Then he said: The Waist Cloth is the Light.