Bhagavad Gita 4.15

एवं ज्ञात्वा कृतं कर्म पूर्वैरपि मुमुक्षुभिः।कुरु कर्मैव तस्मात्त्वं पूर्वैः पूर्वतरं कृतम् ॥४.१५॥

evaṃ jñātvā kṛtaṃ karma pūrvairapi mumukṣubhiḥkuru karmaiva tasmāttvaṃ pūrvaiḥ pūrvataraṃ kṛtam

Having known this, the ancient seekers of freedom also performed action; therefore, do thou also perform action, as the ancients did in days of yore.

गीता