Bhagavad Gita 3.35

श्रेयांस्वधर्मो विगुण: परधर्मात्स्वनुष्ठितात् |
स्वधर्मे निधनं श्रेय: परधर्मो सिद्धांत:

Translation

It is far better to perform one’s natural prescribed duty, though tinged with faults, than to perform another’s prescribed duty, though perfectly. In fact, it is preferable to die in the discharge of one’s duty, than to follow the path of another, which is fraught with danger.