Two of the riversthe Brahmaputra and the Sonaare called nadas, or main rivers. These are other great rivers that are very prominent: Candravasa, Tamraparni, Avatoda, Krtamala, Vaihayasi, Kaveri, Veni, Payasvini, Sarkaravarta, Tungabhadra, Krsnavenya, Bhimarathi, Godavari, Nirvindhya, Payosni, Tapi, Reva, Surasa, Narmada, Carmanvati, Mahanadi, Vedasmrti, Rsikulya, Trisama, Kausiki, Mandakini, Yamuna, Sarasvati, Drsadvati, Gomati, Sarayu, Rodhasvati, Saptavati, Susoma, Satadru, Candrabhaga, Marudvrdha, Vitasta, Asikni and Visva. The inhabitants of Bharata-varsa are purified because they always remember these rivers. Sometimes they chant the names of these rivers as mantras, and sometimes they go directly to the rivers to touch them and bathe in them. Thus the inhabitants of Bharata-varsa become purified.