यत्फलं मुनिभिः प्रोक्तं वेदव्यासेन पुत्रक । तत्फलं जागरे विष्णोः पक्षयोः शुक्लकृष्णयोः
yatphalaṃ munibhiḥ proktaṃ vedavyāsena putraka | tatphalaṃ jāgare viṣṇoḥ pakṣayoḥ śuklakṛṣṇayoḥ
हे पुत्रा! मुनि आणि वेदव्यासांनी जे फल सांगितले आहे, शुक्लपक्ष असो वा कृष्णपक्ष—विष्णूसाठी जागरण केल्याने तेच फल प्राप्त होते.
Unspecified (contextually a narrator/teacher within Dvārakā Māhātmya)
Tirtha: Dvārakā
Type: kshetra
Listener: pūtraka (dear child)
Scene: A teacher addresses a ‘child’ (pūtraka) and declares that the sages’ and Vyāsa’s promised reward is attained by keeping vigil for Viṣṇu in either fortnight; night setting with lamps and devotional singing implied.
Keeping a devotional night vigil for Viṣṇu is equated with the highest merits praised by the sages.
The broader context is Dvārakā Māhātmya, celebrating Dvārakā and Vaiṣṇava observances connected with it.
Viṣṇu-jāgara—staying awake in devotional vigil—applicable in both śukla and kṛṣṇa pakṣa.