Matsya Purana — Brahmā’s Four Faces
वेदाभ्यासरतस्यास्य प्रजाकामस्य मानसाः मनसः पूर्वसृष्टा वै जाता यत् तेन मानसाः //
vedābhyāsaratasyāsya prajākāmasya mānasāḥ manasaḥ pūrvasṛṣṭā vai jātā yat tena mānasāḥ //
Because he was devoted to the practice of the Vedas and desired progeny, beings were first created from his mind; since they were born of the mind, they are therefore called “mānasas” (mind-born).
It describes an early mode of creation—mind-born creation (mānasāḥ)—where beings arise from the mind before other, more physical forms of generation are emphasized.
By linking prajā (progeny/subjects) with Vedic discipline, it implies that orderly creation and social continuity are grounded in dharmic learning—an ideal mirrored in a king’s duty to sustain and protect his people through Vedic-aligned governance.
No direct Vāstu or iconographic rule is stated; the ritual takeaway is the primacy of Vedic practice (veda-abhyāsa) as the enabling condition for auspicious, ordered manifestation.