Bhagavad Gita 5.3

He is a true ascetic who never desires nor dislikes, who is unaffected by the opposites and is easily freed from bondage.

ज्ञेयः स नित्यसंन्यासी यो न द्वेष्टि न काङ्क्षति।
निर्द्वन्द्वो हि महाबाहो सुखं बन्धात्प्रमुच्यते॥

jñeyaḥ sa nityasaṃnyāsī yo na dveṣṭi na kāṅkṣati|
nirdvandvo hi mahābāho sukhaṃ bandhātpramucyate||

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