Mantra 2

अथ य एतदेवं विद्वानग्निहोत्रं जुहोति तस्य सर्वेषु लोकेषु सर्वेषु भूतेषु सर्वेष्वात्मसु हुतं भवति ॥ ५.२४.२ ॥

In plain words

But he who makes the fire offering knowing this — his offering is made in all the worlds, in all beings, in all selves.