प्राणेषु रन्ध्रनवके प्रवृत्तेष्वथ तस्य चित् ।चेत्योन्मुखी बभूवान्तः प्राणदर्पणबिम्बिता
In plain words
Then, when the prāṇas had become active in the nine apertures [of the body], his cit, reflected within in the mirror of prāṇa, became turned toward the cetya [the object of cognition].