Shloka 58
Droṇa’s Ācārya-Dakṣiṇā: Capture of Drupada and Division of Pāñcāla (द्रोण-आचार्यदक्षिणा)
दंष्टाश्न देष्टिणां तेषां मर्मस्वपि निपातिता: । त्वचं नैवास्य बिभिदु: सारत्वात् पृथुवक्षस:,चौड़ी छातीवाले भीमसेनकी त्वचा लोहेके समान कठोर थी; अतः यद्यपि उनके मर्मस्थानोंमें सर्पोने दाँत गड़ाये थे, तो भी वे उनकी त्वचाको भेद न सके
daṃṣṭāśna-deṣṭināṃ teṣāṃ marmasv api nipātitāḥ | tvacaṃ naivāsya bibhiduḥ sāratvāt pṛthuvakṣasaḥ ||
毗湿摩波耶那说道：那些毒蛇纵然将獠牙深深刺入他身上的要害之处，也仍不能穿透他的皮肤；因为胸膛宽阔、体质坚实的毗摩塞那，皮肤坚硬如铁。此事昭示：与生俱来的力量与韧性足以挫败恶意；而加诸正直之人的伤害，若有天赋的精力与功德护持，往往终将落空。
वैशम्पायन उवाच
Educational Q&A
Hostile intent does not always succeed: when a person possesses strong innate resilience (and, by implication, protective merit), even targeted harm may fail. The passage highlights steadfastness and the limits of malice.
Serpents bite Bhīmasena, even aiming at his vital points, but their fangs cannot penetrate his skin because he is broad-chested and exceptionally tough—his body is described as iron-hard.