Matsya Purana — Pṛthu
धनुष्कोट्या च शैलेन्द्रान् उत्सार्य स महाबलः भुवस्तलं समं चक्रे लोकानां हितकाम्यया //
dhanuṣkoṭyā ca śailendrān utsārya sa mahābalaḥ bhuvastalaṃ samaṃ cakre lokānāṃ hitakāmyayā //
With the tip of his bow, that mighty one thrust the great mountains aside and made the surface of the earth level, desiring the welfare of all beings.
It reflects a creation-ordering motif: a powerful cosmic agent reshapes the earth by moving mountains and leveling the ground to establish a stable world for living beings (a sarga-style act rather than a pralaya event).
The governing ethic is loka-hita (public welfare): just as the mighty one makes the earth habitable, a king should remove obstacles and create orderly conditions for society; a householder similarly supports stability and well-being through responsible, beneficial action.
The idea of making the ground “level” (samam) underpins later Vāstu logic: stable, even land is a prerequisite for settlement and temple construction, aligning built space with order and welfare.