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.
Here in this slokam the word purusa is referring to His expansion as the atma within the heart of all living entities which by its own intrinsic nature is liberated and blissful but by the influence of karma and prakriti is entangled in the material existence undergoing experiences of enjoyment and suffer…