One verse

Bhagavad Gita 13.5

13.5

ऋषिभिर्बहुधा गीतं छन्दोभिर्विविधैः पृथक् | ब्रह्मसूत्रपदैश्चैव हेतुमद्भिर्विनिश्चितैः ||१३-५||

ṛṣibhirbahudhā gītaṃ chandobhirvividhaiḥ pṛthak . brahmasūtrapadaiścaiva hetumadbhirviniścitaiḥ ||13-5||

ṛṣibhiḥ
by the wise sages
bahudhā
in many ways
gītam
described
chandobhiḥ
by Vedic hymns
vividhaiḥ
various
pṛthak
variously
brahma-sūtra
of the Vedānta
padaiḥ
by the aphorisms
ca
also
eva
certainly
hetu-madbhiḥ
with cause and effect
viniścitaiḥ
certain

That knowledge of the field of activities and of the knower of activities is described by various sages in various Vedic writings. It is especially presented in Vedānta-sūtra with all reasoning as to cause and effect.