If a man's Agnihotra sacrifice is not followed by the new-moon and full-moon sacrifices, by the four-months' sacrifices, and by the harvest sacrifice, if it is unattended by guests, not offered at all, or without the Vaisvadeva ceremony, or not offered according to rule, then it destroys his seven worlds.

In plain words: If a person does the daily fire offering, called the Agnihotra, but skips the other required rituals, ignores guests, or does it carelessly and against the rules, it harms him instead of helping. It ruins all the good worlds he hoped to reach.