6:11
शुचौ देशे प्रतिष्ठाप्य स्थिरमासनमात्मनः ।
नात्युच्छ्रितं नातिनीचं चैलाजिनकुशोत्तरम् ॥६- ११॥
shuchau deshe pratiShThaapya sthiramaasanamaatmanaH ।
naatyuchChritaM naatiniichaM chailaajinakushottaram ॥६- ११॥
Source: Automatic ITRANS Transliteration
Established in a clean place, adopting a steady posture
Not too high, not too low, Kusha grass, hide, cloth
Source: Milind S. Pandit
The yogi should sit on a firm seat that is neither too high nor too low, covered with sacred Kusha grass, a deerskin, and a cloth, one over the other, in a clean spot.