Shivapurana 8.9.36

Śivapurāṇa (complete text) 8.9.36

ātmavijñānaṃ suśroṇi vāraṃ jñātvā tu yatnataḥ kṣaṇaṃ truṭirlavaṃ caiva nimeṣaṃ kāṣṭhakālikam