Krishna concludes this section on natural duty with an undeniable law of physics. He tells Arjuna (Kaunteya) that one should never give up the work born of their inherent nature (sahajaṁ karma na tyajet), even if it appears to be full of faults or causing distress (sa-doṣam api). He uses a brilliant analogy: just as fire is always covered by smoke (dhūmenāgnir ivāvṛtāḥ), every single material endeavor (sarvārambhā) is covered by some fault or friction (doṣeṇa).