Matsya Purana — Account of the Manvantaras: Manus
अकल्मषस् तथा धन्वी तपोमूलस्तपोधनः तपोरतिस्तपस्यश्च तपोद्युतिपरंतपौ //
akalmaṣas tathā dhanvī tapomūlastapodhanaḥ taporatistapasyaśca tapodyutiparaṃtapau //
Also there were Akalmaṣa and Dhanvī—Tapomūla, Tapodhana, Taporati, Tapasya, and Tapodyuti—all supreme ascetics, mighty through austerity and as though scorched by the fire of penance.
This verse does not describe Pralaya directly; it highlights the Purāṇic ideal that tapas (austerity) generates spiritual “heat” that purifies sin and empowers sages—an underlying force often invoked in cosmic events elsewhere in the Matsya Purana.
By praising “tapodhana” (one whose wealth is austerity), the verse sets a value-standard: rulers and householders are urged to honor ascetics, support disciplined living, and cultivate self-restraint (dama) and purity (akalmaṣa) as foundations of dharma.
No specific Vāstu or temple rule is stated here; ritually, the verse functions as a reverential catalogue of tapas-powered figures—supporting the Purāṇic principle that rites gain potency through purity, restraint, and the blessing of accomplished ascetics.