Ramayana
मा च बुद्धिमधर्मे त्वं कुर्या राजन्कथञ्चन । बुद्धिमन्तो हि राजानो ध्रुवमश्नन्ति मेदिनीम् ॥ 7-40-10 ॥
Never, O king, turn your mind toward unrighteousness in any way; for it is wise kings who surely enjoy the dominion of the earth.
english translation