Matsya Purana — Yayāti’s Fall
*ययातिरुवाच नु तुल्यतेजाः सुकृतं हि कामये योगक्षेमं पार्थिवात्पार्थिवः सन् दैवादेशादापदं प्राप्य विद्वांश् चरेन्नृशंसं हि न जातु राजा //
*yayātiruvāca nu tulyatejāḥ sukṛtaṃ hi kāmaye yogakṣemaṃ pārthivātpārthivaḥ san daivādeśādāpadaṃ prāpya vidvāṃś carennṛśaṃsaṃ hi na jātu rājā //
Yayāti said: “O you of equal splendor, I seek the merit born of righteous deeds (sukṛta) and the secure well-being of the realm (yogakṣema). Though a king is a king among kings, if by the ordinance of fate he falls into calamity, the wise should not act with cruelty; a ruler must never be ruthless.”
This verse is not about Pralaya; it belongs to Rajadharma-style instruction, stressing that even in misfortune caused by fate, a king must avoid cruelty.
It teaches rājadharma: a ruler should aim at the realm’s yogakṣema (welfare and security) and remain compassionate and restrained—never becoming ruthless even when political fortune turns against him.
No Vastu/temple-architecture or ritual procedure is stated here; the technical term yogakṣema is political-ethical, referring to protection and prosperity rather than construction rules.