Matsya Purana — Dialogue of Aṣṭaka and Yayāti: Exhaustion of Merit
सर्वाणि चैतानि यथोदितानि तपःप्रधानान्यभिमर्षकेण नश्यन्ति मानेन तमो ऽभिभूताः पुंसः सदैवेति वदन्ति सन्तः //
sarvāṇi caitāni yathoditāni tapaḥpradhānānyabhimarṣakeṇa naśyanti mānena tamo 'bhibhūtāḥ puṃsaḥ sadaiveti vadanti santaḥ //
All these practices, as stated, though centered on austerity (tapas), are ruined by the sting of pride. Overpowered by darkness (tamas), a person’s merits perish—so the righteous continually declare.
It does not describe cosmic pralaya directly; it teaches an inner “dissolution” where pride and tamas cause the destruction of one’s spiritual merit and austerity.
It warns that pride undermines dharma-based conduct; a king or householder must practice humility, since arrogance corrupts discipline, judgment, and the fruits of righteous action.
No Vastu or temple-architecture rule is stated; ritually, it implies that the efficacy of vows, sacrifices, and austerities depends on humility—pride can nullify their intended spiritual fruit.