Śrīmad-Bhāgavatam · Text 11.13.38
Who is speaking and story frame
मयैतदुक्तं वो विप्रा गुह्यं यत् साङ्ख्ययोगयो: ।
जानीत मागतं यज्ञं युष्मद्धर्मविवक्षया ॥ ३८ ॥
mayaitad uktaṁ vo viprā
guhyaṁ yat sāṅkhya-yogayoḥ
jānīta māgataṁ yajñaṁ
yuṣmad-dharma-vivakṣayā
My dear brāhmaṇas, I have now explained to you the confidential knowledge of Sāṅkhya, by which one philosophically distinguishes matter from spirit, and of aṣṭāṅga-yoga, by which one links up with the Supreme. Please understand that I am the Supreme Personality of Godhead, Viṣṇu, and that I have appeared before you desiring to explain your actual religious duties.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.