This is the truth: the sacrificial works which they (the poets) saw in the hymns (of the Veda) have been performed in many ways in the Tretâ age. Practise them diligently, ye lovers of truth, this is your path that leads to the world of good works!

In plain words: The fire rituals that ancient poet-seers found in the Vedic hymns are real and were done in many ways in an earlier age. People who love truth should do them carefully, because they lead to a heavenly world earned by good deeds.