Chapter 18 · verse 54 · gita.yoga.org

Bhagavad Gita 18.54

ब्रह्मभूतः प्रसन्नात्मा न शोचति न काङ्क्षति।समः सर्वेषु भूतेषु मद्भक्तिं लभते पराम्

Becoming Brahman, serene in the Self, he neither grieves nor desires; he is the same to all beings, and obtains supreme devotion to Me.