Bhagavatapurana 9.9.18

9.9.18

tataḥ sudāsastatputro damayantīpatirnṛpaḥ /
āhurmitrasahaṃ yaṃ vai kalmāṣāṅghrimuta kvacit /
vasiṣṭhaśāpādrakṣo 'bhūdanapatyaḥ svakarmaṇā //

17. & 18. And of this last was born Rituparna who, the friend of Nala, learnt from him Aswavidya (the secret of managing the horse) having given him in exchange the secret of dice (gambling); and Rituparna's son was Sarvakama; his son was Sudasa; his son (Saudasa) was the husband of Madayanti, O king, and he was sometimes called Mitrasaha, and sometimes Kalmashapada. Through Vasishta's curse he became a demon and was childless in consequence of his own Karma.