Ashtangahridayasamhita 76

76

upakāra-pradhānaḥ syād apakāra-pare 'py arau |
saṃpad-vipatsv eka-manā hetāv īrṣyet phale na tu || 25 ||

One should be focused on doing good even toward an enemy intent on harm; / one should be composed in success and misfortune; one should emulate the cause [of success], but not envy the fruit. // 25