Kurmapurana 1.20.12

Kūrmapurāṇa 1.20.12

ayutāyuḥ sutastasya ṛtuparṇastu tatsutaḥ /
ṛtuparṇasya putro 'bhūt sudāso nāma dhārmikāḥ /
saudāsastasya tanayaḥ khyātaḥ kalmāṣapādakaḥ //