Māṇdūkya Upaniṣad 1.2.3

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.