Matsya Purana — Agastya’s Origin
अन्योन्यशापाच्च तयोर् विगते इव चेतसी जग्मतुः शापनाशाय ब्रह्माणं जगतः पतिम् //
anyonyaśāpācca tayor vigate iva cetasī jagmatuḥ śāpanāśāya brahmāṇaṃ jagataḥ patim //
Because of their mutual curse, it was as though their minds had lost all clarity; and so the two of them went to Brahmā—the Lord of the world—in order to have the curse undone.
This verse is not about pralaya; it highlights a moral-psychological consequence of a curse and the recourse to Brahmā as an authority who can neutralize such karmic afflictions.
It implies that when conflict leads to reciprocal harm, one should seek legitimate spiritual-ethical remedy (guru, scripture, or divine authority), aiming at reconciliation and removal of the fault rather than prolonging hostility.
No Vāstu or iconographic rule is stated here; the ritual takeaway is the motif of śāpa-nāśa—seeking sanctioned expiation and restoration of right order through a higher authority.