Yoga Sūtra Chapter Two verse 50
बाह्याभ्यन्तरस्थम्भ वृत्तिः देशकालसन्ख्याभिः परिदृष्टो दीर्घसूक्ष्मः ॥५०॥
bāhya-ābhyantara-stambha-vṛttiḥ deṣa-kāla-saṃkhyābhiḥ paridṛṣṭaḥ dīrgha-sūkṣmaḥ ||50||
The external, internal and suspension fluctuations
are seen to be long and subtle
through place, time and number.
Commentaries and Reflections
Commentary by Paul Harvey:
Some Prāṇāyāma Techniques prioritise Length.
Other Prāṇāyāma Techniques prioritise Subtlety.
While yet other Prāṇāyāma Techniques prioritise Both.
– Reflection on Yoga Sūtra Chapter Two verse 50