Narrated 'Abdullah bin Shaqiq:
"I said to Abu Dharr: 'If I saw the Prophet (ﷺ) then I would asked him." He said: 'What is it that you would have asked him about?' I said: 'I would have asked him if Muhammad saw his Lord?' He said: 'I did ask him that, and he (ﷺ) said: I saw light.'" (DE)
English reference (DE): Vol. 5, Book 44, Hadith 3282 (DE)
Arabic reference (DE): Book 47, Hadith 3593 (DE)