Śānti-parva Adhyāya 3: Karṇa’s training under Rāma Jāmadagnya and the Bhārgava restriction on the Brahmāstra
पिता गुरु्न संदेहो वेदविद्याप्रद: प्रभु: अतो भार्गव इत्युक्त मया गोत्र तवान्तिके
pitā gurau na saṁdeho vedavidyāpradaḥ prabhuḥ | ato bhārgava ity uktaṁ mayā gotraṁ tavāntike ||
इसमें संदेह नहीं कि वेद और विद्या देने वाला समर्थ गुरु पिता के समान है; इसलिए आपके निकट मैंने अपना गोत्र ‘भार्गव’ कहा।
नारद उवाच
A teacher who imparts the Veda and knowledge is ethically regarded as equal to one’s father; gratitude and reverence toward such a guru are part of dharma.
Narada explains why he identified himself with the Bhārgava lineage: because the guru who grants Vedic learning is like a father, and lineage-identification is framed through that relationship in the given context.