Verse 64

संवेद्यं बीजमित्युक्तं स्फुरतस्तौ यतस्ततः ।हृदि संवेद्यमाप्यैव प्राणस्पन्दोऽथ वासना

In plain words

the object of cognition is declared to be the seed, since both flash forth from that very source; only upon reaching the object of cognition in the heart do the pulsation of prāṇa, and then vāsanā, arise.