Matsya Purana — Uma’s Austerities and the Slaying of the Deceiver Asura ĀḌi
आडिश्चकार विपुलं तपः परमदारुणम् तमागत्याब्रवीद्ब्रह्मा तपसा परितोषितः //
āḍiścakāra vipulaṃ tapaḥ paramadāruṇam tamāgatyābravīdbrahmā tapasā paritoṣitaḥ //
Āḍi performed abundant austerity—extremely harsh and formidable. Pleased by that penance, Brahmā came to him and spoke.
Directly, it does not describe Pralaya; it highlights a common Purāṇic mechanism of cosmic governance—intense tapas compels divine attention, leading to boons that often influence creation, lineages, or future events.
It underscores discipline and self-restraint as sources of power and legitimacy: for kings, controlled effort and vows support righteous rule; for householders, regulated austerity (within one’s station) is praised as a means to earn divine favor and moral strength.
No explicit Vāstu or temple-building rule appears in this verse; ritually, it affirms tapas as an efficacious rite (austerity as sādhanā) that culminates in a deity’s or creator-god’s approval and instruction.