Bhagavad Gita 18.54

ब्रह्मभूत: प्रियात्मा न शोचति न काङ क्षति |
समः सर्वेषु भूतेषु मद्भक्तिं लभते परम्

Translation

One situated in the transcendental Brahman realization becomes mentally serene, neither grieving nor desiring. Being equitably disposed toward all living beings, such a yogi attains supreme devotion unto Me.