Śatapatha Brāhmaṇa ("of a hundred paths") 8.1.2.9

8.1.2.9

viśvakarma ṛṣiriti | vāgvai viśvakarma 'rṣirvācā hīdaṃ sarvaṃ kṛtaṃ tasmādvāgviśvakarma 'rṣiḥ prajāpatigṛhītayā tvayeti prajāpatisṛṣṭayā tvayetyetadvācaṃ gṛhṇāmi prajābhya iti vācamupariṣṭātprāpādayata nānopadadhāti ye nānākāmā vāci tāṃstaddadhāti sakṛtsādayatyekāṃ tadvācaṃ karotyatha yannānā sādayedvācaṃ ha vicindyātsaiṣā trivṛdiṣṭakā tasyokto bandhuḥ

'The Rishi Visvakarman,'--the Rishi Visvakarman ('the all-worker'), doubtless, is Speech, for by speech everything here is done: hence the Rishi Visvakarman is speech:--'By thee, taken by Pragâpati,'--that is, 'by thee, created by Pragâpati;'--'I take speech for my descendants,'--therewith he introduced speech from above. Separately he lays down (these bricks): what separate desires there are in speech, those he now lays into it. Only once he settles them: he thereby makes speech one; but were he to settle them each separately, he assuredly would cut speech asunder. This is a threefold brick: the meaning of this has been explained.