Arjuna meets the Lokapālas, is tested by Indra, and is led to Amarāvatī for astra-śikṣā
Indraloka-gamana
स मासान् विभजन् काले बहुथधा पर्वसंधिषु । तथैव भगवान् सोमो नक्षत्र: सह गच्छति
sa māsān vibhajan kāle bahudhā parva-sandhiṣu | tathaiva bhagavān somo nakṣatraiḥ saha gacchati ||
Disse Vaiśampāyana: «Assim, no devido curso do tempo, nas junções das estações, os meses são repartidos de muitas maneiras. Do mesmo modo, o divino Soma, a Lua, move-se com as constelações, faz seu circuito em torno de Meru e, assim, assinala as divisões dos meses.»
वैशम्पायन उवाच
The verse highlights ṛta/dharma as cosmic regularity: time is not arbitrary but structured through observable celestial motions, especially the Moon’s progress with the nakṣatras, which underwrites the calendrical division of months and seasonal transitions.
Vaiśampāyana describes how months and seasonal junctures are determined, explaining that the Moon, moving in concert with the constellations (nakṣatras), serves as the celestial marker by which the divisions of time are recognized.