प्लक्षद्वीपवर्णनम्
Description of Plakṣa-dvīpa
तत्र पुण्या जनपदाश्चातुर्वर्ण्यसमन्विताः / नद्यश्चापि महापुण्या गङ्गाः सप्तविधास्तथा
tatra puṇyā janapadāścāturvarṇyasamanvitāḥ / nadyaścāpi mahāpuṇyā gaṅgāḥ saptavidhāstathā
There are holy realms endowed with the four varṇas; and there too are supremely sacred rivers—the Gaṅgās are said to be of seven kinds.