Mantra 3

तद्यथेषीकातूलमग्नौ प्रोतं प्रदूयेतैवंहास्य सर्वे पाप्मानः प्रदूयन्ते य एतदेवं विद्वानग्निहोत्रं जुहोति ॥ ५.२४.३ ॥

In plain words

And as the tip of a reed cast into a fire is burnt up, so all his evils are burnt up who makes the fire offering knowing this.