Bhagavad-gītā 2.38
BG 2.38
Open the full passageसुखदुःखे समे कृत्वा लाभालाभौ जयाजयौ । ततो युद्धाय युज्यस्व नैवं पापमवाप्स्यसि ॥३८॥
Sanskrit
sukha-duḥkhe same kṛtvā lābhālābhau jayājayau tato yuddhāya yujyasva naivaṁ pāpam avāpsyasi
Translation
Do thou fight for the sake of fighting, without considering happiness or distress, loss or gain, victory or defeat—and by so doing you shall never incur sin.