sukha-duḥkhe same kṛitvā lābhālābhau jayājayau
tato yuddhāya yujyasva naivaṁ pāpam avāpsyasi|| 38||

My Understanding : When you take action, do not base your decisions on whether it will bring you happiness or not. Your focus should be on performing your duty without evasion. Never resort to wrongdoing, even if it seems to promise happiness—like accepting a bribe for personal gain. Similarly, do not fixate on the results of your efforts, whether you succeed or fail. Instead, remain steadfast and never retreat from your responsibilities, even in the midst of battle.