Sadhanavidhi

Sādhanavidhi (साधनविधि) refers to “rules of practice” (for prāṇāyāma), according to the Haṭhatattvakaumudī, an 18th-century text on Haṭhayoga consisting of fifty-six chapters and approximately 1680 verses.

The Haṭhatattvakaumudī has five chapters on prāṇāyāma (9, 10, 12, 37–38), namely, the preliminary auxiliaries and rules of practice

(sādhanavidhi) for Prāṇāyāma, an explanation of the names, nature and characteristics of kumbhakas, breathing methods for quelling

suffering, necessary rules for prāṇāyāma and an explanation of prāṇāyāma, which total more than 240 verses.