B.G 13.21
The insentient Prakrti is considered the cause of 'actions, instruments, and agency', while it is the Being, the Purusha, who is the cause for experiencing happiness and distress.
Gīta Bhāshya 13.21
'kārya' - body, that does the action. 'karaṇā' - the instrument are functional organs (the mind, five senses, five action organs). It is the insentient 'Prakrti' that is the cause of 'action, instrument, and agency'. But, it is the 'Purusha', the being, who is the cause for experiencing happiness and distress.
'kārya', i.e. action, is the material body (as body is meant for action).
"The body is referred to as 'kārya'"
- declared thus (in ancient testimonial).
The functional organs (the mind, five senses, and five actor organs) are the instruments. The enjoyment is nothing but the experience. Because of the nature of consciousness, one experiences. Insentient (prakṛti), being inert, undergoes transformation.
"The Prakrti is understood to be the cause in the matters regarding 'action, instrument, and agency'. It is the being, Purusha, who transcends insentient Prakrti who experiences happiness and distress."
- stated thus in the Bhāgavata Purāṇa.
