The path of goodness traversed by your father, grandfather and great-grandfathers is that of maintaining the subjects [prajās], including the men, animals and trees. That is the path you should follow. Unnecessary anger is contrary to your duty. Therefore I request you to control your anger.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
आतिष्ठत सतां मार्गं कोपं यच्छत दीपितम् । पित्रा पितामहेनापि जुष्टं वः प्रपितामहैः
ātiṣṭhata satāṃ mārgaṃ kopaṃ yacchata dīpitam | pitrā pitāmahenāpi juṣṭaṃ vaḥ prapitāmahaiḥ
SB 6.4.11