Bhagavad Gita 5.11
कायेन मनसा बुद्ध्या केवलैरिन्द्रियैरपि। योगिनः कर्म कुर्वन्ति सङ्गं त्यक्त्वात्मशुद्धये।।5.11।।
kāyena manasā buddhyā kevalairindriyairapi| yoginaḥ karma kurvanti saṅgaṃ tyaktvātmaśuddhaye||5.11||
kayena manasa buddhya kevalairindriyairapi yoginah karma kurvanti sangam tyaktvatmashuddhaye5.11
Meaning
Yogis perform action through body, mind, intellect, and senses alone, abandoning attachment, for the sake of self-purification. The purpose of action is inner growth, not outer gain.
योगीजन, शरीर, मन, बुद्धि और इन्द्रियों द्वारा आसक्ति को त्याग कर आत्मशुद्धि (चित्तशुद्धि) के लिए कर्म करते हैं।
This is verse 11 of 29 in Chapter 5 (Karma Sanyasa Yoga) of the Bhagavad Gita.