अथेतरांशावसरे प्रणवस्य समस्थितौ ।निष्कम्पकुम्भको नाम प्राणानामभवत्क्रमः
In plain words
Then, on the occasion of the next portion, in the even station of the praṇava, there arose among the prāṇas the process named niṣkampa-kumbhaka, the unwavering retention.