श्री भगवानुवाच अनाश्रितः कर्मफलं कार्यं कर्म करोति यः। स संन्यासी च योगी च न निरग्निर्न चाक्रियः ॥

anāśhritaḥ karma-phalaṁ kāryaṁ karma karoti yaḥ sa sannyāsī cha yogī cha na niragnir na chākriyaḥ

He that performeth such action as his duty, independently of the fruit of action, he is an ascetic, he is a Yogî, not he that is without fire, and without rites.

In plain words: Krishna says the real holy person is someone who does their duty without caring about the reward. Someone is not holy just because they stopped lighting the sacred fire and doing religious rituals.