तत्रैकाग्रं मन: कृत्वा यतचित्तेन्द्रियक्रिय: | उपविश्यासने युञ्ज्याद्योगमात्मविशुद्धये ॥12॥
tatraikāgraṁ manaḥ kṛitvā yata-chittendriya-kriyaḥ upaviśhyāsane yuñjyād yogam ātma-viśhuddhaye
tatra—there; eka-agram—one-pointed; manaḥ—mind; kṛitvā—having made; yata-chitta—controlling the mind; indriya—senses; kriyaḥ—activities; upaviśhya—being seated; āsane—on the seat; yuñjyāt yogam—should strive to practice yog; ātma viśhuddhaye—for purification of the mind;
(and) sitting on that seat, he should concentrate his mind for the purification of the internal organ, making the mind one-pointed and keeping the actions of the mind and senses under control.