" A person will always find someone with more talent and more knowledge. Ultimately, “Above all those who have knowledge is the All-Knowing” (QUR’AN , 12:76), God. Moses was once asked if he was the most knowledgeable of people, and he answered “Yes.” Moses was then told that there was a man who had knowledge that Moses did not have. This man was Khiḍr , who was not a prophet, but Moses , without a trace of vanity, became his student. (The story is told in Sura al-Kahf of the Qur’an.) "

― Hamza Yusuf , Purification of the Heart: Signs, Symptoms and Cures of the Spiritual Diseases of the Heart