Better is one's own duty, though imperfectly done, than the duty of another well performed. Doing the work ordained by one's own nature, one incurs no fault.
श्रेयान्स्वधर्मो विगुणः परधर्मात्स्वनुष्ठितात् | स्वभावनियतं कर्म कुर्वन्नाप्नोति किल्बिषम् ||१८-४७||