Vaṃśānuvārṇana and the Transition to the Fourth (Upasaṃhāra) Pada
मासस्याहानि त्रिंशत्तु यानि वै कवयो विदुः / निर्वाणरतयो देवा रात्रयस्तु विहङ्गमाः
māsasyāhāni triṃśattu yāni vai kavayo viduḥ / nirvāṇaratayo devā rātrayastu vihaṅgamāḥ
The thirty days of the month, as the seers-poets know, are the gods who delight in nirvāṇa; and the nights are called vihaṅgama, flitting like birds.