कौन्तेयस्त्वं न राधेयो न तवाधिरथः पिता ।नासि सूतकुले जातः कर्ण तद्विद्धि मे वचः ॥
kaunteyastvaṃ na rādheyo na tavādhirathaḥ pitā |nāsi sūtakule jātaḥ karṇa tadviddhi me vacaḥ ||
You are Kunti's son, Karna, and Radha did not bear you. Adhiratha is not your father. You were not born among the charioteers. Know this from me.
MBh 5.145.2Kunti to Karna