Genealogies from Yayāti’s Sons to the Yadu Dynasty; Romapāda–Ṛṣyaśṛṅga; Kārtavīryārjuna; and the Rise of Yādava Branches
अर्जुन: कृतवीर्यस्य सप्तद्वीपेश्वरोऽभवत् । दत्तात्रेयाद्धरेरंशात् प्राप्तयोगमहागुण: ॥ २४ ॥
arjunaḥ kṛtavīryasya sapta-dvīpeśvaro ’bhavat dattātreyād dharer aṁśāt prāpta-yoga-mahāguṇaḥ
The son of Kṛtavīrya was Arjuna. He [Kārtavīryārjuna] became the emperor of the entire world, consisting of seven islands, and received mystic power from Dattātreya, the incarnation of the Supreme Personality of Godhead. Thus he obtained the mystic perfections known as aṣṭa-siddhi.
He is the son of King Kṛtavīrya, described here as the ruler of the entire earth (saptadvīpa) who gained great yogic power and qualities by the grace of Dattātreya, an expansion of Lord Hari.
This verse identifies Dattātreya as “hareḥ aṁśa,” an expansion/portion of Lord Hari (Viṣṇu), from whom Kārtavīrya Arjuna received yoga and extraordinary virtues.
It teaches that true excellence—inner strength, discipline, and higher qualities—arises most securely through receiving guidance and mercy from a genuine, God-connected teacher and using power in alignment with dharma.