MuU 1.2.13
तस्मै स विद्वानुपसन्नाय सम्यक् प्रशान्तचित्ताय शमान्विताय । येनाक्षरं पुरुषं वेद सत्यं प्रोवाच तां तत्वतो ब्रह्मविद्याम्
tasmai sa vidvānupasannāya samyak praśāntacittāya śamānvitāya | yenākṣaraṃ puruṣaṃ veda satyaṃ provāca tāṃ tatvato brahmavidyām
Sanskrit for this text is pending; the English follows the translator's numbering.
To that pupil who has approached him respectfully, whose thoughts are not troubled by any desires, and who has obtained perfect peace, the wise teacher truly told that knowledge of Brahman through which he knows the eternal and true Person.
Translated by F. Max Müller