Somavaṃśa-prasavaḥ
Birth of the Lunar Line: Budha–Purūravas and the Urvaśī Episode
ऋषय ऊचुः किंलक्षणेन धर्मेण तपसेह श्रुतेन वा
ṛṣaya ūcuḥ kiṃlakṣaṇena dharmeṇa tapaseha śrutena vā
The ṛṣis said: “By what marks of dharma, by what austerity (tapas), or by what śruti-born knowledge is this attained here?”