Śukadeva Gosvāmī said: O Mahārāja Parīkṣit, Ambarīṣa had three sons, named Virūpa, Ketumān and Śambhu. From Virūpa came a son named Pṛṣadaśva, and from Pṛṣadaśva came a son named Rathītara.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
श्रीशुक उवाच । विरूपः केतुमान् शम्भुरम्बरीषसुतास्त्रयः । विरूपात्पृषदश्वोऽभूत्तत्पुत्रस्तु रथीतरः
śrīśuka uvāca | virūpaḥ ketumān śambhurambarīṣasutāstrayaḥ | virūpātpṛṣadaśvo'bhūttatputrastu rathītaraḥ
SB 9.6.1