Chapter 18 · verse 10 · gita.yoga.org

Bhagavad Gita 18.10

न द्वेष्ट्यकुशलं कर्म कुशले नानुषज्जते।त्यागी सत्त्वसमाविष्टो मेधावी छिन्नसंशयः

The man of renunciation, pervaded by purity, intelligent, and with his doubts cut asunder, does not hate an unpleasant task nor is he attached to a pleasant one.