As pouring water on the root of a tree nourishes the trunk, branches, twigs and leaves, and as supplying food to the stomach enlivens the senses and limbs of the body, worshiping the Supreme Personality of Godhead satisfies the demigods, who are part of that Supreme Personality. Performing yajna involves worshiping the Supreme Lord. Here the Supreme Lord worshiped the Supreme Lord. Therefore it is said, bhagavan atmanatmanam ije: the Lord worshiped Himself by Himself. This does not, of course, justify the Mayavada philosophy, by which one thinks himself the Supreme Personality of Godhead. The jiva, the living entity, is always different from the Supreme Lord. The living entities (vibhinnamsa) never become one with the Lord, although Mayavadis sometimes imitate the Lords worship of Himself. Lord Krsna meditated upon Himself every morning as a grhastha, and similarly Lord Ramacandra performed yajnas to satisfy Himself, but this does not mean that an ordinary living being should imitate the Lord by accepting the process of ahangraha-upasana. Such unauthorized worship is not recommended herein.