नारद–शुक संवादः (Nārada–Śuka Dialogue): Tyāga, Saṃyama, and Vyakta–Avyakta Viveka
निशाया: प्रथमे यामे चोदना द्वादश स्मृता: । मध्ये स्वप्नात् परे यामे द्वादशैव तु चोदना:,रातके पहले पहरमें वायुको धारण करनेकी बारह प्रेरणाएँ बतायी गयी हैं। मध्य रात्रिमें रात्रिके बिचले दो पहरोंमें सोना चाहिये तथा पुनः अन्तिम प्रहरमें बारह प्रेरणाओंका ही अभ्यास करना चाहिये:
In the first watch of the night, twelve injunctions (impulses) for sustaining the breath are remembered. In the watch after midnight, beyond the time of sleep, there are likewise twelve injunctions. Thus, in the first part of the night one should practice the twelve disciplines of holding the vāyu; in the middle of the night one should sleep through the two middle watches; and in the final watch one should again practice those same twelve.
याज़्ञवल्क्य उवाच