Bhagavad Gita 18.54

ब्रह्मभूतः प्रसन्नात्मा न शोचति न काङ्क्षति।समः सर्वेषु भूतेषु मद्भक्तिं लभते पराम् ॥१८.५४॥

brahmabhūtaḥ prasannātmā na śocati na kāṅkṣatisamaḥ sarveṣu bhūteṣu madbhaktiṃ labhate parām

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

गीता