श्रीमद् भगवद्गीता

मूल श्लोकः

कार्यकारणकर्तृत्वे हेतुः प्रकृतिरुच्यते।

पुरुषः सुखदुःखानां भोक्तृत्वे हेतुरुच्यते।।13.21।।

English Translation By Swami Gambirananda

13.21 With regard to the source of body and organs, Nature is said to be the cause. The soul is the cause so far as enjoyership of happiness and sorrow is concerned.