A young boy uttered a hymn to Adi Sankaracharya on how his identity of being the Self is as clear as a fruit in the hand in answer to the question who he is. As Self-Knowledge was as natural and evident to him as a fruit in one's hand, he became famous under the name of "Hastamalaka." "Hasta" means hand, and "amalaka" is a small fruit with properties of rejuvenation. Adi Sankaracharya wrote a commentary on these verses answering various doubts...