Also, please describe the inner and outer space of the universe by specific divisions, as well as the character and activities of the great souls, and also the characteristics of the different classifications of the castes and orders of social life.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
प्रमाणमण्डकोशस्य बाह्याभ्यन्तरभेदतः । महतां चानुचरितं वर्णाश्रमविनिश्चयः
pramāṇamaṇḍakośasya bāhyābhyantarabhedataḥ | mahatāṃ cānucaritaṃ varṇāśramaviniścayaḥ
SB 2.8.16