Chapter 15 · Verse 19
मा सङ्कल्पविकल्पाभ्यां चित्तं क्षोभय चिन्मय
mā saṅkalpavikalpābhyāṃ cittaṃ kṣobhaya cinmaya | upaśāmya sukhaṃ tiṣṭha svātman
Do not agitate the mind (citta) with desires (saṅkalpa) and doubts (vikalpa). Be still, be happy, and abide in the Self. The simplest and most direct instruction: stop the agitation of the mind and discover what was always present beneath it.