Verse 18.47 from the Bhagavad Gita reads as follows:

श्रेयान्स्वधर्मो विगुणः परधर्मात्स्वनुष्ठितात्‌।
स्वभावनियतं कर्म कुर्वन्नाप्नोति किल्बिषम्‌।।

“śreyānswa-dharmo viguṇaḥ para-dharmātsv-anuṣhṭhitāt,
svabhāva-niyataṁ karma kurvannāpnoti kilbiṣham.”

The above verse can be translated as:

“It is better to engage in one’s own occupation, even though one may perform it imperfectly, than to accept another’s occupation and perform it perfectly. Duties prescribed according to one’s nature are never affected by sinful reactions.”

This verse emphasizes the importance of following one’s own nature and performing one’s own duty, rather than trying to perform someone else’s duty perfectly. It suggests that even if one may not be perfect in performing their own duty, it is still preferable to doing someone else’s duty perfectly.

The verse also suggests that performing duties prescribed according to one’s own nature or Swabhava, is never affected by sinful reactions. This implies that by performing one’s own duty with sincerity and dedication, one can avoid mental agitations and avoid negative karma.

Overall, verse 18.47 highlights the importance of staying true to oneself and following one’s own nature or Swabhava. It suggests that by doing so, one can avoid negative karma, even if one may not perform their duty perfectly.