question #1 Sahih Muslim 178b, Book 1, Hadith 349 : What did Abu Dharr inquire about regarding the Prophet’s experience with his Lord?

I said to Abu Dharr: Had I seen the Messenger of Allah, I would have asked him. He (Abu Dharr) said: What is that thing that you wanted to inquire of him? He said: I wanted to ask him whether he had seen his Lord. Abu Dharr said: I, in fact, inquired of him, and he replied: I saw Light.