sthiram

न प्रहृष्येत्प्रियं प्राप्य नोद्विजेत्प्राप्य चाप्रियम्

sthira-buddhiḥ — steady intellect

One should not exult on getting what is pleasant, nor shrink from what is not. Steady in understanding, unconfused, knowing Brahman, one is established in Brahman.

शुचौ देशे प्रतिष्ठाप्य स्थिरमासनमात्मनः

sthiram — steadfast

Having set a firm seat in a clean place, neither too high nor too low, spread with cloth, deerskin and kusha grass,

अथ चित्तं समाधातुं न शक्नोषि मयि स्थिरम्

sthiram — steadily

If you cannot hold your thought steadily on me, then seek to reach me by the practice of returning, Arjuna.

तुल्यनिन्दास्तुतिर्मौनी सन्तुष्टो येनकेनचित्

sthira — firmly fixed

the same under blame and praise, quiet, content with whatever comes, without a fixed dwelling, steady in mind — such a devoted person is dear to me.