Verse 3

अज्ञातपरमार्थेन क्रियामात्रे च तिष्ठता ।फलकार्पण्ययुक्तेन मनसा सोऽकरोन्मखम्

In plain words

with a mind that did not yet know the highest truth, that stood in mere ritual action, that was joined to a petty craving for its fruit — thus he performed the sacrifice: