Abdullah bin Shaqiq reported,

I said to Abu Dharr, "Had I met the Prophet ﷺ, I would have asked him a question."Abu Dharr asked, "What would you have asked him?"I replied, "I would have asked him whether he saw his Lord ."Abu Dharr said, "I already asked him that, and he answered, 'He is Light, how could I see Him?'"

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عبد الله بن شقيق قال

قلت لأبي ذر لو أدركت النبي ﷺ لسألته قال وعما كنت تسأله قال سألته هل رأى ربه عز وجل قال أبو ذر قد سألته فقال نور أنى أراه