One verse

Bhagavad Gita 4.18

4.18

कर्मण्यकर्म यः पश्येदकर्मणि च कर्म यः | स बुद्धिमान्मनुष्येषु स युक्तः कृत्स्नकर्मकृत् ||४-१८||

karmaṇyakarma yaḥ paśyedakarmaṇi ca karma yaḥ . sa buddhimānmanuṣyeṣu sa yuktaḥ kṛtsnakarmakṛt ||4-18||

karmaṇi
in action
akarma
inaction
yaḥ
one who
paśyet
observes
akarmaṇi
in inaction
ca
also
karma
fruitive action
yaḥ
one who
saḥ
he
buddhi-mān
is intelligent
manuṣyeṣu
in human society
saḥ
he
yuktaḥ
is in the transcendental position
kṛtsna-karma-kṛt
although engaged in all activities

One who sees inaction in action and action in inaction is intelligent among men, and he is in the transcendental position, although engaged in all sorts of activities.