Say, [O Muhammad], "I do not tell you that I have the depositories [containing the provision] of Allah or that I know the unseen, nor do I tell you that I am an angel. I only follow what is revealed to me." Say, "Is the blind equivalent to the seeing? Then will you not give thought?"
The Prophet Muhammad is aware of many things which are unavailable to the rest of humanity. For example, I looked at Paradise and saw that the majority of its residents were the poor; and I looked at the (Hell) Fire and saw that the majority of its residents were women (Sahih al-Bukhari 5198). As far as I know, not even any other prophet had this knowledge.
I found this tafsir:
This verse was revealed about Abu Jahl and his companions al-Nadr Ibn al-Harith and 'Uyaynah, and then it was revealed about the clients.
Tanwîr al-Miqbâs min Tafsîr Ibn ‘Abbâs
This indicates there's something specific which was unseen to the Prophet at the time the verse was revealed.
Question: What was unseen when Qur'an 6:50 was revealed?