Jaiminīya (Talavakāra) Brāhmaṇa 2-3.40

2-3.40

tadāhuḥ kiṃ nātiṣṭuvanti kiṃ nātiśaṃsanti kiṃ nātigṛhṇantīti
sa brūyātprāṇameva nātiṣṭuvanti
stute vai prāṇa eva pariśiṣyate
vācameva nātiśaṃsanti
śaste vai vāgeva pariśiṣyate
mana eva nātigṛhṇanti
gṛhīte vai mana eva pariśiṣyate
nātiṣṭutaṃ nātiśastaṃ nātigṛhītamevaṃvidassaṃpannameva bhavati
atha ha vai samṛddha eva yajña upāsitavyaḥ
yadadhīyannanupahanyamānaḥ karoti tatsvargyam
svargyaṃ ma etatsvargaloka etena bhaviṣyāmītyeva tadvidyāt
atha yadduradhīyannupahanyamāno viṣiñcankaroti puṣṭissā prajananam
puṣṭirma eṣā prajananaṃ bahurbhaviṣyāmi prajaniṣya ityeva tadvidyāt

They ask on this point: 'What do they not over-chant? What do they not over-recite? What do they not over-draw?' He should say: 'It is breath alone that they do not over-chant; when chanted, breath alone remains. It is speech alone that they do not over-recite; when recited, speech alone remains. It is mind alone that they do not over-draw; when drawn, mind alone remains. What is not over-chanted, not over-recited, not over-drawn, becomes fully accomplished for him who knows thus. And indeed, only the fulfilled sacrifice should be revered. What he does while reciting without faltering, that belongs to heaven. "This of mine belongs to heaven; by this I will be in the heavenly world"—thus should he understand it. But what he does while reciting poorly, stumbling and spilling, that is nourishment, procreation. "This of mine is nourishment, procreation; I will become many, I will propagate"—thus should he understand it.'