"सत्यं वद धर्मं चर स्वाध्यायान्मा प्रमदः । आचारस्य प्रियं धनमाहृत्य प्रजातन्तुं मा व्यवच्छेत्सीः ॥"

Origin: The shloka is from the Taittiriya Upanishad, one of the major Upanishads in Hindu philosophy. It is a part of the Yajurveda and is considered to be one of the oldest Upanishads

"Speak the truth, follow righteousness, do not neglect the continuous, and acquire wealth through the guidance of a teacher. Be ready for next phase of life.