यो ह वै ज्येष्ठं च श्रेष्ठं च वेद ज्येष्ठश् च ह वै श्रेष्ठश् च भवति । प्राणो वाव ज्येष्ठश् च श्रेष्ठश् च
yo ha vai jyeṣṭhaṃ ca śreṣṭhaṃ ca veda jyeṣṭhaś ca ha vai śreṣṭhaś ca bhavati | prāṇo vāva jyeṣṭhaś ca śreṣṭhaś ca
Devanagari rendered by HREEM from the edition's roman (IAST) text; the IAST is the edition's own.
He who knows the oldest and the best becomes himself the oldest and the best. Breath indeed is the oldest and the best.
Translated by F. Max Müller