Bhashya
अत्स्यन्नमित्यादि समानम् ।प्राणस्त्वेष आत्मन इति हउवाच ।प्राणस्ते तव उदक्रमिष्यत् उत्क्रान्तोऽभविष्यत्,यन्मां नागमिष्य इति ॥
In plain words
The passage beginning with 'atsyannam' is explained similarly. 'This indeed is the breath of the self,' he said; your breath would have departed and left you if you had not come to me.
Close to the Sanskrit
The passage beginning with 'atsyannam' is similar. 'This indeed is the breath of the self', thus he spoke. Your breath would have departed, it would have been departed, if you had not come to me.