ChU 7.2.2
स यो वाचं ब्रह्मेत्य् उपास्ते । यावद् वाचो गतं तत्रास्य यथाकामचारो भवति यो वाचं ब्रह्मेत्य् उपास्ते । अस्ति भगवो वाचो भूय इति । वाचो वाव भूयो ऽस्तीति । तन् मे भगवान् ब्रवीत्व् इति
sa yo vācaṃ brahmety upāste | yāvad vāco gataṃ tatrāsya yathākāmacāro bhavati yo vācaṃ brahmety upāste | asti bhagavo vāco bhūya iti | vāco vāva bhūyo 'stīti | tan me bhagavān bravītv iti
Devanagari rendered by HREEM from the edition's roman (IAST) text; the IAST is the edition's own.
'He who meditates on speech as Brahman, is, as it were, lord and master as far as speech reaches—he who meditates on speech as Brahman.' 'Sir, is there something better than speech?' 'Yes, there is something better than speech.' 'Sir, tell it me."
Translated by F. Max Müller