Matsya Purana — The Burning of Tripura and Rudra’s Victory
अथ दैत्यपुराभावे पुष्ययोगो बभूव ह बभूव चापि संयुक्तं तद्योगेन पुरत्रयम् //
atha daityapurābhāve puṣyayogo babhūva ha babhūva cāpi saṃyuktaṃ tadyogena puratrayam //
Then, when the decisive moment for the demon-city arrived, the auspicious Puṣya conjunction came to pass; and by that very alignment, the three cities (Tripura) also entered a single conjunction, becoming aligned together.
It highlights that the decisive event depends on an auspicious astrological alignment—Puṣya-yoga—by which Tripura becomes perfectly aligned, enabling the foretold outcome.
It reflects the Purāṇic ethic of acting at the proper time (kāla): rulers and householders are advised to undertake major actions—war, rites, construction, consecrations—after considering auspicious timings and conditions.
While not prescribing Vāstu rules directly, it uses the idea of ‘alignment/conjunction’ (saṃyoga) as a ritual-cosmic prerequisite—mirroring how temple rites and major undertakings in the Matsya Purana often emphasize selecting favorable yogas and nakṣatras.