सुखदुःखे समे कृत्वा लाभालाभौ जयाजयौ। ततो युद्धाय युज्यस्व नैवं पापमवाप्स्यसि।।2.38।।
sukha-duḥkhe same kṛitvā lābhālābhau jayājayau tato yuddhāya yujyasva naivaṁ pāpam avāpsyasi
Having made pleasure and pain, gain and loss, victory and defeat equal, engage in battle for the sake of battle; thus, you shall not incur sin.