Patanjali's yoga sutras

प्रच्छर्दनविधारणाभ्यां वा प्राणस्य
pracchardana-vidhāraṇa-ābhyāṃ vā prāṇasya

Pracchardana (प्रच्छर्दन):—[=pra-cchardana] [from pra-cchṛd] n. emitting, exhaling

Exhalation 

Vidhāraṇa (विधारण):—[=vi-dhāraṇa] [from vi-dharman > vi-dhṛ] mf(ī)n. checking, restraining, retention

Retention

ābhyāṃ “from”

Vā (वा).—ind.

1) As an alternative conjunction it means ‘or’

prāṇasya = “of the breath” https://www.sanskritdictionary.com/?q=prāṇasya

वा प्राणस्य Google Translate “or of the soul”