Still Mata Sati attended that Yajna.
The world cannot subsist for a single moment without Yajna.
And therefore, says the Gita, he who eats without offering Yajna eats stolen food.
According to another version, some sages approached him at the end of the Yajna and requested him to give them some secluded land.
The udgata seated himself on a high seal, asandi( a raised seat), and the others on grass mats during the Yajna ritual and chanted the mantras.
As per Vedas,
these form the primary duty of human beings and hence Yajna is so emphasized not only in Vedas
but in almost entire Indian literature of ancient era.
To keep the food pure or to keep the senses under control, or to make a good use of the rays of Sun or
keep the earth free from impurities[clean] is called Gomedha Yajna.