Here is the Sanskrit anuvad, Hindi anuvad, and English translation of Sankhya Yoga Chapter 2, Verse 2.38.
Sanskrit
सुखदुःखे समे कृत्वा लाभालाभौ जयाजयौ । ततो युद्धाय युज्यस्व नैवं पापमवाप्स्यसि ॥ २.३८ ॥
Hindi
जय-पराजय, लाभ-हानि और सुख-दुःखको समान समझकर, उसके बाद युद्धके लिये तैयार हो जा; इस प्रकार युद्ध करनेसे तू पापको नहीं प्राप्त होगा|
English
The Blessed Lord spoke unto Arjuna: O ARJUNA, by considering victory and defeat, pleasure and pain, gain and loss with indifference, you will not commit any sin.