Ramayana
धर्मज्ञश्च कृतज्ञश्च बुद्ध्या च परिनिष्ठितः । शशास पृथिवीं स्फीतां धर्मेण सुसमाहितः ॥ 7-84-6 ॥
"Knowing dharma, grateful, firmly established in his understanding, and well-composed, he ruled the prosperous earth in accordance with dharma."
english translation