Matsya Purana — Origin of Soma
तयोर्निपातेन समुद्रभूम्योर् अथान्तरिक्षस्य च भीतिरासीत् तदस्त्रयुग्मं जगतां क्षयाय प्रवृद्धमालोक्य पितामहो ऽपि //
tayornipātena samudrabhūmyor athāntarikṣasya ca bhītirāsīt tadastrayugmaṃ jagatāṃ kṣayāya pravṛddhamālokya pitāmaho 'pi //
From the impact of those two, the ocean and the earth—and even the mid-region of the sky—were seized with terror. Seeing that pair of missiles swelling in power, as if to bring about the destruction of the worlds, even Pitāmaha (Brahmā) took notice and intervened.
It portrays a pralaya-like threat: the unleashed pair of astras grows so powerful that earth, ocean, and the atmospheric realm tremble, signaling potential world-destruction unless cosmic authority restrains it.
By implication, it warns against uncontrolled power: just as astras must be governed to prevent universal harm, rulers and householders must restrain anger and force, using authority only under dharma and for protection.
No direct Vastu or temple-rule is stated; ritually, it supports the Purāṇic principle that destructive forces (astra/tejas) require pacification and regulation by higher order—often expressed through śānti rites and protective observances.