ChU 6.5.3
तेजो ऽशितं त्रेधा विधीयते । तस्य यः स्थविष्ठो धातुस् तद् अस्थि भवति । यो मध्यमः स मज्जा । यो ऽणिष्ठः सा वाक्
tejo 'śitaṃ tredhā vidhīyate | tasya yaḥ sthaviṣṭho dhātus tad asthi bhavati | yo madhyamaḥ sa majjā | yo 'ṇiṣṭhaḥ sā vāk
Devanagari rendered by HREEM from the edition's roman (IAST) text; the IAST is the edition's own.
'Fire (i.e. in oil, butter, &c.) when eaten becomes threefold; its grossest portion becomes bone, its middle portion marrow, its subtilest portion speech.
Translated by F. Max Müller