Bhagavad Gita 18.47श्रेयान्स्वधर्मो विगुणः परधर्मात्स्वनुष्ठितात्।स्वभावनियतं कर्म कुर्वन्नाप्नोति किल्बिषम् ॥

Just as a poisonous substance does not harm the worm born in that substance, so he who does his Svadharma (the duty ordained according to his own nature) does not incur any sin.What is poison to the whole world is sweet to a worm and yet sugarcane juice that is sweet causes its death. So a mans appointed duty which frees him from bondage must, therefore, be practised however difficult it may seem to be. If you try to do the duty of another it will bring,danger. He who has no knowledge of the Self cannot remain even for a moment without doing action. (Cf.III.35)