Śrīmad-Bhāgavatam · Text 11.22.42
Who is speaking and story frame
इन्द्रियायनसृष्ट्येदं त्रैविध्यं भाति वस्तुनि ।
बहिरन्तर्भिदाहेतुर्जनोऽसज्जनकृद् यथा ॥ ४२ ॥
indriyāyana-sṛṣṭyedaṁ
trai-vidhyaṁ bhāti vastuni
bahir-antar-bhidā-hetur
jano ’saj-jana-kṛd yathā
Because the mind, which is the resting place of the senses, has created the identification with a new body, the threefold material variety of high, middle and low class appears as if present within the reality of the soul. Thus the self creates external and internal duality, just as a man might give birth to a bad son.
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.