pratiṣṭhāpya–Establishing; ātmānaḥ–his; āsanam–seat; chela-ajina-kuśa-uttaram–of Kuśa grass, deerskin, and cloth; śuchau deśe–in a clean place; sthiram–which is firm; na ati-uchchhritam–neither too high; na ati-nīcham–nor too low; upaviśya–sitting; tatra āsane–on that seat; yata-chitta-indriya-kriyaḥ–subjugating all mental and sensual activity; kṛtvā–making; manaḥ–the mind; eka-agram–one-pointed; yuñjyāt–he should practise; yogam–samādhi; ātma-viśuddhaye–for self-purification, to attain spiritual realisation. [11–12]

11–12 In a clean place, not too high and not too low, the yogī should establish a firm seat of Kuśa grass, deer skin, and cloth. Then, sitting on that seat, subjugating all mental and sensual activity, with one-pointed concentration he should practise meditational trance in order to purify his heart.