Bhagavad Gita 11.55

He who does every action for My sake, to whom I am the final goal, who loves Me alone and hates no one—O My dearest son, only he can realize Me!

मत्कर्मकृन्मत्परमो मद्भक्तः सङ्गवर्जितः।
निर्वैरः सर्वभूतेषु यः स मामेति पाण्डव॥

matkarmakṛnmatparamo madbhaktaḥ saṅgavarjitaḥ|
nirvairaḥ sarvabhūteṣu yaḥ sa māmeti pāṇḍava||

English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).