Bhagavad Gita 2.55 Chapter 2, Verse 55

श्री भगवानुवाच

प्रजहाति यदा कामान् सर्वान् पार्थ मनोगतान् ।
आत्मन्येवात्मना तुष्टः स्थितप्रज्ञस्तदोच्यते ॥२.५५॥

śrī bhagavānuvāca
prajahāti yadā kāmān sarvān pārtha manogatān
ātmanyevātmanā tuṣṭaḥ sthitaprajñastadocyate

Meaning

The Lord said: O Partha, when one gives up all desires of the mind and is content in the Self by the Self alone, one is said to be of steady wisdom.

Newly written by Bhajan Dhun — scholarly review in progress.

Reference: Bhagavad Gita 2.55 (Chapter 2, The Yoga of Knowledge (Sankhya Yoga), Verse 55)