Fixing his seat firmly on a clean spot, not too high and not too low, and spreading over it a piece of cloth, a deer-skin and Kusha (grass), there, seated on that seat, with his mind fixed on one point, and restraining his mind and senses, one should practice contemplation for the purification of his self.
शुचौ देशे प्रतिष्ठाप्य स्थिरमासनमात्मनः। नात्युच्छ्रितं नातिनीचं चैलाजिनकुशोत्तरम्॥ तत्रैकाग्रं मनः कृत्वा यतचित्तेन्द्रियक्रियः। उपविश्यासने युज्याद् योगमात्मविशुद्धये॥