Taittirīya Upaniṣad1.11 Śikṣāvallī
सत्यं वद । धर्मं चर । स्वाध्यायान्मा प्रमदः । आचार्याय प्रियं धनमाहृत्य प्रजातन्तुं मा व्यवच्छेत्सीः ॥
Speak truth. Walk the path of dharma. Never be negligent in your study. After giving the teacher his due, do not cut off the thread of progeny. (Taittiriya Upanishad convocation address)
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