ChU 6.5.2
आपः पीतास् त्रेधा विधीयन्ते । तासां यः स्थविष्ठो धातुस् तन् मूत्रं भवति । यो मध्यमस् तल् लोहितम् । यो ऽणिष्ठः स प्राणः
āpaḥ pītās tredhā vidhīyante | tāsāṃ yaḥ sthaviṣṭho dhātus tan mūtraṃ bhavati | yo madhyamas tal lohitam | yo 'ṇiṣṭhaḥ sa prāṇaḥ
Devanagari rendered by HREEM from the edition's roman (IAST) text; the IAST is the edition's own.
'Water when drunk becomes threefold; its grossest portion becomes water, its middle portion blood, its subtilest portion breath.
Translated by F. Max Müller