Shiva Purana
शिष्याः प्रत्येकमेतेषां चत्वारश्शांतचेतसः ॥ श्वेतादयश्च रुष्यांतांस्तान्ब्रवीमि यथाक्रमम् ॥ ७ ॥
Each of these had four disciples of quiet minds. They are from Śveta to Ruṣya. I shall enumerate them in the proper order.
english translation
ziSyAH pratyekameteSAM catvArazzAMtacetasaH ॥ zvetAdayazca ruSyAMtAMstAnbravImi yathAkramam ॥ 7 ॥
hk transliteration by Sanscript