B.G 4.01, 02, and 03
श्रीभगवानुवाच
इमं विवस्वते योगं प्रोक्तवानहमव्ययम्। विवस्वान्मनवे प्राह मनुरिक्ष्वाकवेब्रवीत् ॥१॥
śrībhagavānuvāca
imaṁ vivasvatē yōgaṁ prōktavānahamavyayam। vivasvānmanavē prāha manurikṣvākavēbravīt ॥1॥
Sri Bhagavān said:
I shared this eternal and undying Yōga with the Sun. He taught it to his son Manu, and Manu narrated it to Iksvaku.
एवं परम्पराप्राप्तमिमं राजर्षयो विदुः। स कालेनेह महता योगो नष्टः परन्तप ॥२॥
ēvaṁ paramparāprāptamimaṁ rājarṣayō viduḥ। sa kālēnēha mahatā yōgō naṣṭaḥ parantapa ॥2॥
Thus, the knowledge was passed down through the disciple succession of royal kings. But, O Scorcher of foes, as time passed, this magnificent Yōga was lost.
स एवायं मया तेऽद्य योगः प्रोक्तः पुरातनः। भक्तोऽसि मे सखा चेति रहस्यं ह्येतदुत्तमम् ॥३॥
sa ēvāyaṁ mayā tē'dya yōgaḥ prōktaḥ purātanaḥ। bhaktō'si mē sakhā cēti rahasyaṁ hyētaduttamam ॥3॥
Because you are both my dear friend and a devoted student, I have shared that same secret supreme knowledge, the ancient Yōga, to you.
Gīta Tātparya 4.01-03
This chapter explores the concepts of knowledge and the nature of actions in great detail. The Bhagavad Gita is a part of the Pancharatra tradition.
The topics of knowledge and duties are dealt with special depth in this chapter.
The knowledge of Pancharatra that was given to Brahma, Rudra, Indra and the Sun previously by lord Vishnu, that same knowledge was imparted to Pandavas in their incarnations by Vyasa. Vyasa presented it to Arjuna in the middle of the armies, as Bhagavad Gita, that is definitive and concise.
The way a person performs deeds, gods known him to be that. All kings have performed deeds in accordance with Manu, since Krita age. All seekers of liberation should know and practice these deeds. Thus, the Bhagavad Gita elaborates on the three Vedas and their origin.
Stating from Pandavas to king Kshema understood and acted accordingly. Therefore, it is said, there is no scripture equal to the Bhagavad Gita anywhere. Study and practice of the Pāñcarātra gives the knowledge of the Vedas. The Bhagavad Gita provides the summary and essence of Pāñcarātra. Therefore, there is no scripture equal to it anywhere.
-states Brahma Vaivarta Purana.
