Bhagavad Gita 14.23 Chapter 14, Verse 23

उदासीनवदासीनो गुणैर्यो न विचाल्यते ।
गुणा वर्तन्त इत्येव योऽवतिष्ठति नेङ्गते ॥१४.२३॥

udāsīnavadāsīno guṇairyo na vicālyate
guṇā vartanta ityeva yo'vatiṣṭhati neṅgate

Meaning

Sitting like one unconcerned, undisturbed by the qualities, knowing that "only the qualities are acting," they remain steady and do not waver.

Newly written by Bhajan Dhun — scholarly review in progress.

Reference: Bhagavad Gita 14.23 (Chapter 14, The Three Qualities of Nature (Gunatraya Vibhaga Yoga), Verse 23)