Srimad Bhagavad-Gita :
Chapter-13. ( Kshetra-kshetrajna-vibhaga-yogam)
Slokam-20. ( Nature is said to be the cause of all material activities and effects, whereas the living entity is the cause of the various sufferings and enjoyments in this world.)
"karyakaranakartrtve hetuh prakrtirucyate,
purushah sukhaduhkhanam bhoktrtveh heturucyate."
karya-karana-kartrtve = the happening of cause and effect;
prakrtih hetuh ucyate = it is said to be the instrument is the nature;
sukhaduhkhanam bhoktrtveh = in the experience of joy and sorrow;
purushah hetuh ucyate = it is said that purusha is the instrument.
After explaining how the evolution of all jivas or embodied beings along with their modifications and transformations all arise from prakriti or the material substratum pervading physical existence, Lord Krishna elaborates how the Purusa or eternal manifestation of the Supreme Lord as the atma or immortal…