Bhagavad Gita 15.5
The wise attain Eternity when, freed from pride and delusion, they have conquered their love for the things of sense; when, renouncing desire and fixing their gaze on the Self, they cease to be tossed to and fro by the opposing sensations, such as pleasure and pain.
निर्मानमोहा जितसङ्गदोषा अध्यात्मनित्या विनिवृत्तकामाः।द्वन्द्वैर्विमुक्ताः सुखदुःखसंज्ञै र्गच्छन्त्यमूढाः पदमव्ययं तत्॥nirmānamohā jitasaṅgadoṣā adhyātmanityā vinivṛttakāmāḥ|dvandvairvimuktāḥ sukhaduḥkhasaṃjñai rgacchantyamūḍhāḥ padamavyayaṃ tat||
English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).