BG 13.20
कार्यकारणकर्तृत्वे हेतुः प्रकृतिरुच्यते ।
पुरुषः सुखदुःखानां भोक्तृत्वे हेतुरुच्यते ॥
पुरुषः सुखदुःखानां भोक्तृत्वे हेतुरुच्यते ॥
kārya-kāraṇa-kartṛtve hetuḥ prakṛtir ucyate
puruṣaḥ sukha-duḥkhānāṁ bhoktṛtve hetur ucyate
puruṣaḥ sukha-duḥkhānāṁ bhoktṛtve hetur ucyate
Word-for-word meanings
prakṛtiḥ — material nature; ucyate — is said to be; hetuḥ — the cause; kartṛtve — in regard to the agency; kārya — [related to] the effect [i.e., the body]; kāraṇa — [and] its immediately preceding cause [i.e., the senses]; puruṣaḥ — the conscious living being; ucyate — is said to be; hetuḥ — the cause; bhoktṛtve — in the matter of the experiential capacity; sukha — for happiness; duḥkhānām — [and] misery.
Translation
Material nature is said to be the cause in regard to the agency related to the body [as effect] and the senses [as immediately preceding cause]. The conscious living being is said to be the cause in the matter of the experiential capacity for happiness and misery.