Surah Al-Kahf Verse 62

2409 When they came to the Junction of the Seas, Moses forgot about the fish, and his attendant forgot to tell him of the fact that he had seen the fish escaping into the sea in a marvellous way. They passed on, but the stages now became heavier and heavier, and more fatiguing to Moses. So when our old knowledge is exhausted, and we come to the brink of new knowledge, we have a feeling of strangeness, heaviness, and difficulty, especially when we want to pass the new knowledge by and do not make it our own. Some refreshment even if it be in our old traditional way, is required to sustain us. But we must retrace our steps, and seek the accredited repository of the knowledge which is our quest. It is our business to seek him out. We shall not find him without effort.