अथ हैनमाहवनीयोऽनुशशास प्राण आकाशो द्यौर्विद्युदिति य एष विद्युति पुरुषो दृश्यते सोऽहमस्मि स एवाहमस्मीति ॥ १ ॥
In plain words
Then the Āhavanīya fire instructed him: Breath, space, the sky, lightning. The person who is seen in lightning—that person is I; I indeed am that person.
Close to the Sanskrit
Now the Āhavanīya fire instructed him: breath, space, sky, lightning. He who is seen as a person in lightning, I am he, I indeed am he.