Matsya Purana — Kārtavīrya Arjuna’s Solar Boon and the Genealogy from Kroṣṭu to the Yādava Lines
रथानां मेघघोषाणां सहस्राणि दशैव तु नासत्यवादी नातेजा नायज्वा नासहस्रदः //
rathānāṃ meghaghoṣāṇāṃ sahasrāṇi daśaiva tu nāsatyavādī nātejā nāyajvā nāsahasradaḥ //
Even if one possesses ten thousand chariots that thunder like clouds, he is not thereby a speaker of truth, nor truly radiant, nor a sacrificer, nor a giver of thousands.
This verse is not about pralaya; it teaches ethical discernment—material power (like vast chariot wealth) is not proof of spiritual merit such as truthfulness, radiance, sacrifice, or generosity.
It warns rulers and householders that prestige and military splendor do not substitute for dharma: speaking truth, cultivating inner tejas, performing yajña responsibly, and practicing substantial dāna are the real marks of a worthy patron.
Ritually, it emphasizes that being a true yajvā (sacrificer) is a matter of actual performance and qualification, not mere possession of wealth; no specific vastu or temple-building rule is stated in this verse.