Matsya Purana — Vrata-Ṣaṣṭhī: The Sixty Sacred Vows
जन्मायुतं स राजा स्यात् ततः शिवपुरं व्रजेत् एतद् आयुर्व्रतं नाम सर्वकामप्रदायकम् //
janmāyutaṃ sa rājā syāt tataḥ śivapuraṃ vrajet etad āyurvrataṃ nāma sarvakāmapradāyakam //
He would become a king for ten thousand births; thereafter he goes to Śiva’s abode. This is called the Āyur-vrata, the vow that grants all desired aims.
This verse does not discuss pralaya; it is a phalaśruti (result statement) promising multi-birth kingship and eventual attainment of Śiva’s abode through the Āyur-vrata.
It frames vrata-observance as a householder’s dharmic practice that yields both worldly prosperity (rulership/status) and a higher spiritual end (attaining Śivapura), aligning royal/householder life with ritual discipline.
The ritual significance is the Āyur-vrata itself and its promised fruit; no specific Vāstu or temple-building rule is stated in this verse, though “Śivapura” implies a Śaiva soteriological destination.