Cutte is the name of the rishi who gave this openishen. Shavani says, when did worship pudja become more prevalent and youngan hindu cited a his matter of historical ting? Even before that, we hear of huge temples and e images and pujas,. time for time, both were there large vedic sacrifices as well as the worship of the poranic deities. But it's an interesting historical question.
Swami Sarvapriyananda teaches the Katha Upanishad, which is one of the most popular Upanishads. The scripture concerns the story of a young man who goes to the house of death to find out what happens after death. The reply describes the nature of reality and the meaning of life.