Pṛthivī-dohaṇa (The Milking of the Earth) and the Praise of King Pṛthu
दशवर्षसहस्राणि न शेकुश्चेष्टितुं प्रजाः / तदुपश्रुत्य तपसा सर्वे युक्ताः प्रचेतसः
daśavarṣasahasrāṇi na śekuśceṣṭituṃ prajāḥ / tadupaśrutya tapasā sarve yuktāḥ pracetasaḥ
For ten thousand years the beings could not bestir themselves in action. Hearing of this, all the Pracetas became united in tapas (austere penance).