Here is the Sanskrit anuvad, Hindi anuvad, and English translation of Jnana-Karma-Sanyasa Yoga Chapter 4, Verse 4.15.
Sanskrit
एवं ज्ञात्वा कृतं कर्म पूर्वैरपि मुमुक्षुभिः । कुरु कर्मैव तस्मात्त्वं पूर्वैः पूर्वतरं कृतम् ॥ ४.१…
Hindi
पूर्वकालमें मुमुक्षुओं ने भी इस प्रकार जानकर ही कर्म किये हैं। इसलिये तू भी पूर्वजोंद्वारा सदासे किये जानेवाले कर्मोंको ही कर|
English
The Lord continued:O Arjuna, ancient wise men who were searching for salvation in me, knew the facts well. However they even performed actions. Therefore O Arjuna, continue performing your actions doing your Karma as your ancestors once did in the past.