The Emerald Flaring: Vaivasvat and the Truth of the Hearth

Wealthy merchant Vaivasvat offers a colossal sacrifice of gold and jewels at an Agni-yajna. When challenged by the priest, Vaivasvat initially boasts of gaining lasting merit. Agni intervenes, questioning Vaivasvat's true motive. Confronted by the deity, Vaivasvat confesses that his desire is not true piety, but the recognition of his own ego. The sacred fire responds with a flash of emerald green, teaching him that the highest offering is the surrender of self.

Mythology
Source

Taittiriya Brahmana (Commentarial Excerpts) (The specific narrative incident is a profound theological allegory (Leela-Katha) synthesizing core principles from the Brihadaranyaka Upanishads and the Bhagavad Gita concerning the primacy of Bhava (internal disposition) over Karma (external action) in Vedic sacrifice. No single verse documents this exact sequence.)

Sacred Storyen

Moral & Divine Teaching

The true value of any ritual sacrifice—be it material wealth or elaborate penance—lies not in the external offering, but in the internal state of pure, unattached surrender of the ego.