Madhu–Kaiṭabha, Nārāyaṇa’s Yoga-Nidrā, Rudra’s Manifestation, and the Aṣṭamūrti–Trimūrti Teaching
तस्यैवं तप्यमानस्य न किञ्चित् समवर्तत / ततो दीर्घेण कालेन दुः खात् क्रोधो ऽभ्यजायत
tasyaivaṃ tapyamānasya na kiñcit samavartata / tato dīrgheṇa kālena duḥ khāt krodho 'bhyajāyata
Ainsi, tandis qu’il poursuivait ces austérités, rien n’aboutit. Puis, après un long temps, de la souffrance naquit en lui la colère.
Narrator (Purāṇic narrator in the Indradyumna episode; traditionally Sūta relaying the account to sages)
Primary Rasa: karuna
Secondary Rasa: raudra
Indirectly, it shows that external austerity alone does not guarantee inner realization; when the mind remains afflicted (here, by sorrow turning into anger), the recognition of the Self is obstructed—implying that Atman-realization requires inner purification and steadiness.
The verse highlights tapas as a discipline, but also warns that without mastery over mental states (krodha arising from duḥkha), tapas becomes fruitless; this aligns with Yogic and Pāśupata-oriented emphasis on conquering inner enemies (kāma, krodha, etc.) alongside ascetic practice.
It does not name Śiva or Viṣṇu directly; its takeaway is ethical-yogic: both Shaiva and Vaishnava strands in the Kūrma Purāṇa stress inner restraint and purification as prerequisites for divine grace and spiritual success.