Bhagavad Gita 6.15 Chapter 6, Verse 15

युञ्जन्नेवं सदाऽऽत्मानं योगी नियतमानसः ।
शान्तिं निर्वाणपरमां मत्संस्थामधिगच्छति ॥६.१५॥

yuñjannevaṃ sadā''tmānaṃ yogī niyatamānasaḥ
śāntiṃ nirvāṇaparamāṃ matsaṃsthāmadhigacchati

Meaning

Thus always keeping the mind fixed on the Supreme, the yogi of disciplined mind attains peace, the supreme liberation that rests in me.

Newly written by Bhajan Dhun — scholarly review in progress.

Reference: Bhagavad Gita 6.15 (Chapter 6, The Yoga of Meditation (Atma Samyama Yoga), Verse 15)