Matsya Purana — Catalogue of the Eighteen Puranas
पुरातनस्य कल्पस्य पुराणानि विदुर्बुधाः धन्यं यशस्यमायुष्यं पुराणानामनुक्रमम् एवमादित्यसंज्ञा च तत्रैव परिगद्यते //
purātanasya kalpasya purāṇāni vidurbudhāḥ dhanyaṃ yaśasyamāyuṣyaṃ purāṇānāmanukramam evamādityasaṃjñā ca tatraiva parigadyate //
The wise know the Purāṇas to belong to the ancient cosmic age (kalpa). The ordered listing of the Purāṇas is auspicious, fame-bestowing, and conducive to long life; and in that very context the designation “Āditya” is also stated.
Indirectly, it anchors Purāṇic knowledge in the framework of a kalpa (cosmic aeon), the same time-scale used to describe cycles of creation and dissolution, though this verse itself focuses on the Purāṇas’ catalogue and merit.
It promotes śravaṇa/paṭhana (hearing/recitation) of authoritative sacred literature: maintaining and transmitting the Purāṇic order is presented as auspicious, reputation-enhancing, and life-supporting—values relevant to both royal legitimacy and household dharma.
No direct Vāstu or iconographic rule is stated; the ritual takeaway is that even the structured enumeration (anukrama) of Purāṇas is treated as meritorious recitation, implying a liturgical value to ordered sacred catalogues.