Śrīmad-Bhāgavatam · Text 11.20.22
Who is speaking and story frame
साङ्ख्येन सर्वभावानां प्रतिलोमानुलोमत: ।
भवाप्ययावनुध्यायेन्मनो यावत् प्रसीदति ॥ २२ ॥
sāṅkhyena sarva-bhāvānāṁ
pratilomānulomataḥ
bhavāpyayāv anudhyāyen
mano yāvat prasīdati
Until one’s mind is fixed in spiritual satisfaction, one should analytically study the temporary nature of all material objects, whether cosmic, earthly or atomic. One should constantly observe the process of creation through the natural progressive function and the process of annihilation through the regressive function.
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.