Chapter 18 · Liberation through Renunciation · Sanjaya said
Bhagavad Gita 18.75 — By Vyasa's grace
व्यासप्रसादाच्छ्रुतवानेतद्गुह्यमहं परम्। योगं योगेश्वरात्कृष्णात्साक्षात्कथयतः स्वयम् ॥
vyāsaprasādācchrutavānetadguhyamahaṃ param | yogaṃ yogeśvarātkṛṣṇātsākṣātkathayataḥ svayam ||
Meaning
By the grace of Sage Vyasa, I heard this supreme and secret yoga directly from Krishna, the Lord of Yoga, as He spoke it Himself.