Matsya Purana — Origin of Soma
तथाप्यराजत विधुर् दशधा भावयन्दिशः सोमः प्राप्याथ दुष्प्राप्यम् ऐश्वर्यमृषिसंस्कृतम् सप्तलोकैकनाथत्वम् अवाप तपसा तदा //
tathāpyarājata vidhur daśadhā bhāvayandiśaḥ somaḥ prāpyātha duṣprāpyam aiśvaryamṛṣisaṃskṛtam saptalokaikanāthatvam avāpa tapasā tadā //
Even so, the Moon (Vidhu) shone forth, illuminating the directions tenfold; and Soma then attained that hard-to-attain sovereignty—sanctified by the sages—and by austerity won the status of sole lord over the seven worlds.
This verse is not a Pralaya (dissolution) passage; it highlights cosmic order and hierarchy by stating that Soma, through tapas, attains sanctioned sovereignty over the seven worlds.
It presents a Purāṇic model of legitimate authority: rulership (aiśvarya) becomes stable when earned through discipline (tapas) and validated by the wise (ṛṣi-saṃskṛta), implying that ethical self-control and guidance from sages underpin righteous governance.
No direct Vāstu or temple-building rule appears here; the ritual takeaway is the primacy of tapas and sage-sanction (ṛṣi-saṃskṛta) as sources of spiritual legitimacy and cosmic rank.