Matsya Purana — Kailasa
ब्रह्मणो वचनं श्रुत्वा यदुक्तं धारयन्नदीम् ततो विसर्जयामास संरुद्धां स्वेन तेजसा //
brahmaṇo vacanaṃ śrutvā yaduktaṃ dhārayannadīm tato visarjayāmāsa saṃruddhāṃ svena tejasā //
Having heard Brahmā’s instruction, he held back the river as directed; then, by his own spiritual power (tejas), he released the waters that had been restrained.
It depicts controlled cosmic waters: during pralaya-like conditions the flood/river is restrained and then released according to Brahmā’s directive, emphasizing that dissolution and restoration occur under divine order rather than chaos.
Though not a direct rule of conduct, it models dharmic obedience to rightful instruction: just as the agent restrains and releases the waters only as commanded, a king or householder should regulate power and resources—acting with restraint first, then releasing/dispensing appropriately when duty requires.
No explicit Vāstu or temple rule is stated; indirectly, it reflects the ritual-cosmic principle of “niyama” (regulated control) over water—an idea echoed in rites involving water management (tīrtha, abhiṣeka, consecration) and in Vāstu planning where water flow is treated as something to be properly directed, not left uncontrolled.