Verse 4.3

स एवायं मया तेऽद्य योगः प्रोक्तः पुरातनः। भक्तोऽसि मे सखा चेति रहस्यं ह्येतदुत्तमम्।।4.3।।

sa evāyaṁ mayā te ’dya yogaḥ proktaḥ purātanaḥ bhakto ’si me sakhā cheti rahasyaṁ hyetad uttamam

Meaning

Yo, Krishna said, "I'm dropping some major ancient yoga knowledge on you today, my bestie, my ride-or-die. It's the ultimate secret, no cap."

Commentary

OMG, this yoga is, like, totally deep, you know? It's a major secret that Krishna is spilling the tea on.