Aitareyabrahmana 3.8

3.8

yasyai devatāyai havir gṛhītaṃ syāt, tāṃ dhyāyed vaṣaṭkariṣyan.
sākṣād eva tad devatām prīṇāti, pratyakṣād devātāṃ yajati
vajro vai vaṣaṭkāraḥ, sa eṣa prahṛto 'śānto dīdāya.
tasya haitasya na sarva iva śāntiṃ veda na pratiṣṭhāṃ.
tasmād dhāpy etarhi bhūyān iva mṛtyus.
tasya haiṣaiva śāntir eṣā pratiṣṭhā vāg ity eva.
tasmād vaṣaṭkṛtya-vaṣaṭkṛtya vāg ity anumantrayeta,
sa enaṃ śānto na hinasti
vaṣaṭkāra mā mā<m> pramṛkṣo māhaṃ tvām pramṛkṣam,
bṛhatā mana upahvaye vyānena śarīram,
pratiṣṭhāsi pratiṣṭhāṃ gacha
pratiṣṭhām mā gamayeti vaṣaṭkāram anumantrayeta
tad u ha smāha: dīrgham etat sad aprabhv, ojaḥ saha oja
ity eva vaṣaṭkāram anumantrayetau/jaś
ca ha vai sahaś ca vaṣaṭkārasya priyatame tanvau
priyeṇaivainaṃ tad dhāmnā samardhayati
priyeṇa dhāmnā samṛdhyate ya evaṃ veda
vāk ca vai prāṇāpānau ca vaṣaṭkāras,
ta ete vaṣaṭkṛte-vaṣaṭkṛte vyutkrāmanti. tān anumantrayeta:
vāg ojaḥ saha ojo māyi prāṇāpānāv ity,
ātmany eva tad dhotā vācaṃ ca prāṇāpānau ca pratiṣṭhāpayati
sarvāyuḥ sarvāyutvāya
sarvam āyur eti ya evaṃ veda

iii. 8 (xi. 8). He should meditate on the deity for whom the oblation is taken when about to say the _vaṣaṭ_; verily thus openly he delights the deities; before all eyes he sacrifices to the deity. The _vaṣaṭ_ call is a thunderbolt; it shines when hurled if not appeased. Of it not every man as it were knows the appeasing nor the support. From it even now there is often as it were death. The appeasing of it, the support is 'Speech'.

Therefore after each vaṣaṭ call he should recite as accompaniment 'Speech'; appeased it injures him not. With 'O vaṣaṭ call, do not injure me; let me not injure thee; with the great I invoke mind, with cross-breathing body; thou art a support; win support; make me attain support' he should accompany the vaṣaṭ call. As to that he used to say 'That is long, yet it is impotent. With "Force, strength, force" he should accompany the vaṣaṭ call; force and strength are the two dearest forms of the vaṣaṭ call; verily thus he unites it with its abode; with a dear abode does he prosper who knows thus.' The vaṣaṭ call is speech and expiration and inspiration; they depart when each vaṣaṭ call has been said. Them he should accompany with 'Speech, force, strength, force, in me expiration and inspiration'; verily doth the Hotṛ establish speech and expiration and inspiration in the self, with a full life, for fullness of life; a full life he lives who knows thus.