Abdullah ibn Abbas: The story of Moses and Al-Khadir told by the Prophet

Narrated Said bin Jubair:
I said to Ibn Abbas, "Nauf Al-Bukah claims that Moses, the companion of Al-Khadir was not Moses (the prophet) of the children of Israel, but some other Moses." Ibn 'Abbas said, "Allah's enemy (i.e. Nauf) has told a lie. Ubai bin Ka'b told us that the Prophet said, 'Once Moses stood up and addressed Bani Israel. He was asked who was the most learned man amongst the people. He said, 'I.' Allah admonished him as he did not attribute absolute knowledge to Him (Allah). So, Allah said to him, 'Yes, at the junction of the two seas there is a Slave of Mine who is more learned than you.' Moses said, 'O my Lord! How can I meet him?' Allah said, 'Take a fish and put it in a large basket and you will find him at the place where you will lose the fish' ..