Bhagavad Gita 18.54
When he unites with the Eternal and his soul knows the bliss of the Self, he feels no desire or regret, he regards all beings equally, and enjoys the blessing of supreme devotion to Me.
ब्रह्मभूतः प्रसन्नात्मा न शोचति न काङ्क्षति।समः सर्वेषु भूतेषु मद्भक्तिं लभते पराम्॥brahmabhūtaḥ prasannātmā na śocati na kāṅkṣati|samaḥ sarveṣu bhūteṣu madbhaktiṃ labhate parām||
English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).