The ruling on the claim that the knowledge of tawhid (the oneness of Allah) can be explained in ten minutes

Question:
I say: The questioner thanks you. He says: Some people claim that the knowledge of tawhid (the oneness of Allah) is simple and can be explained in ten minutes. What is your view on this?

Answer:
Well, the Messenger (peace and blessings be upon him) stayed in Makkah for thirteen years. In three minutes, or in thirteen years, he called people to tawhid (the oneness of Allah) and taught them about it? This is refuted by the biography of the Messenger (peace and blessings be upon him). Did the Messenger (peace and blessings be upon him) teach them tawhid (the oneness of Allah) in ten minutes and finish, or in three minutes? That would mean Allah gave him a skill greater than what He gave the Messenger (peace and blessings be upon him), who taught tawhid (the oneness of Allah) in three minutes. And who taught it?
Let them show us who taught them tawhid (the oneness of Allah) in three minutes. Who is he? Let them show us one single person. How can he teach all people tawhid (the oneness of Allah) in three minutes or ten minutes?