Explanation:

The Katha Upanishad is one of the mukhya (primary) Upanishads, embedded in the last short eight sections of the Katha school of the Krishna Yajurveda.The Katha Upanishad consists of two chapters each divided into three sections.The first Adhyaya is considered to be of older origin than the second.The Upanishad is the legendary story of a little boy, Nachiketa – the son of Sage Vajasravasa, who meets Yama (the Hindu deity of death). Their conversation evolves to a discussion of the nature of man, knowledge, Atman (Soul, Self) and moksha (liberation).