Chāndogya Upaniṣad 4.16

4.16.1

eṣa ha vai yajño yo 'yaṃ pavate \
eṣa ha yann idaṃ sarvaṃ punāti \
yad eṣa yann idaṃ sarvaṃ punāti \
tasmād eṣa eva yajñaḥ \
tasya manaś ca vāk ca vartanī \\416.1\

1. Verily, he who purifies here is a sacrifice. Truly, when he moves, he purifies this whole world. Since when he moves (yan) he purifies this whole world, therefore indeed he is a sacrifice (yajña).

His two paths are mind and speech.

4.16.2

tayor anyatarāṃ manasā saṃskaroti brahmā \
vācā hotādhvaryur udgātānyatarām \
sa yatra upākṛte prātaranuvāke purā paridhānīyāyā brahmā vyavavadati \\416.2\

2. Of these the Brahman priest (brahmā) forms one with his mind; the Hotṛi, the Adhvaryu, and the Udgātṛi priests, the other with speech.

In case, after the morning litany has commenced, the Brahman priest interrupts before the concluding verse, he forms only one path. The other becomes discontinued.

4.16.3

anyatarām eva (S ) saṃskaroti \
hīyate anyatarā \
sa yathā ekapād vrajan ratho vaikena cakreṇa vartamāno riṣyaty evam asya yajño riṣyati \
yajñaṃ riṣyantaṃ yajamāno (S ) \
sa iṣṭvā pāpīyān bhavati \\416.3\

As a one-legged man walking, or a chariot proceeding with one wheel, suffers injury, so his sacrifice suffers injury. The institutor of the sacrifice suffers injury after the sacrifice which suffers injury. He becomes worse off by having sacrificed.

4.16.4

atha yatra upākṛte prātaranuvāke na purā paridhānīyāyā brahmā vyavavadaty ubhe eva vartanī saṃskurvanti \
na hīyate anyatarā \\416.4\

4. But in case, after the morning litany has commenced, the Brahman priest does not interrupt before the concluding verse, they form both paths; the other does not become discontinued.

4.16.5

sa yathobhayapād vrajan ratho vā ubhābhyāṃ cakrābhyāṃ vartamānaḥ pratitiṣṭhaty evam asya yajñaḥ pratitiṣṭhati yajñaṃ pratitiṣṭhantaṃ yajamāno 'nu pratitiṣṭhati \
sa iṣṭvā śreyān bhavati \\416.5\

5. As a two-legged man walking, or a chariot proceeding with both wheels, is well supported, so his sacrifice is well supported. The institutor of the sacrifice is well supported after the sacrifice which is well supported. He becomes better off by having sacrificed.