One verse

Bhagavad Gita 2.48

2.48

योगस्थः कुरु कर्माणि सङ्गं त्यक्त्वा धनञ्जय | सिद्ध्यसिद्ध्योः समो भूत्वा समत्वं योग उच्यते ||२-४८||

yogasthaḥ kuru karmāṇi saṅgaṃ tyaktvā dhanañjaya . siddhyasiddhyoḥ samo bhūtvā samatvaṃ yoga ucyate ||2-48||

yoga-sthaḥ
equipoised
kuru
perform
karmāṇi
your duties
saṅgam
attachment
tyaktvā
giving up
dhanam-jaya
O Arjuna
siddhi-asiddhyoḥ
in success and failure
samaḥ
equipoised
bhūtvā
becoming
samatvam
equanimity
yogaḥ
yoga
ucyate
is called

Perform your duty equipoised, O Arjuna, abandoning all attachment to success or failure. Such equanimity is called yoga.