प्लवन्ते धर्मलघवो लोके5म्भसि यथा प्लवा: | मज्जन्ति पापगुरव: शस्त्र स्कन्नमिवोदके,संसारमें धर्माचरण करके जो अपनेको हलके रखते हैं (अपने ऊपर पापका भारी बोझ नहीं लादते हैं), वे पानीके ऊपर चलनेवाली नौकाके समान भवसागरसे पार हो जाते हैं; परंतु जो पापके बोझसे अपनेको बोझिल बना लेते हैं, वे जलमें फेंके हुए हथियारकी भाँति नरक-समुद्रमें डूब जाते हैं
plavante dharma-laghavo loke 'mbhasi yathā plavāḥ | majjanti pāpa-guravaḥ śastra-skannam ivodake ||
Bhīṣma said: “In this world, those who keep themselves light through dharma—by not loading themselves with the heavy burden of sin—float across the ocean of worldly existence like boats upon water. But those made heavy by sin sink, like a weapon cast into water, plunging into the hellish sea.”
भीष्म उवाच
Dharma functions like buoyancy: ethical living keeps a person ‘light’ and able to cross saṃsāra, while sin becomes a heavy load that causes one to sink into suffering (symbolized as a hellish sea).
In the opening of the Anuśāsana Parva, Bhīṣma instructs Yudhiṣṭhira on righteous conduct. Here he uses a vivid simile—boats floating and weapons sinking—to impress the moral consequence of dharma versus pāpa.