Aitareyabrahmana 2.32

2.32

cakṣūṃṣi vā etāni savanānāṃ yat tūṣṇīṃśaṃso.
bhūr Agnir jyotir jyotir Agnir iti prātaḥsavanasya cakṣuṣī,
Indro jyotir bhuvo jyotir Indra iti mādhyaṃdinasya savanasya cakṣuṣī,
Sūryo jyotir jyotiḥ svaḥ Sūrya iti tṛtīyasavanasya cakṣuṣī
cakṣuṣmadbhiḥ savanai rādhnoti,
cakṣuṣmadbhiḥ savanaiḥ svargaṃ lokam eti ya evaṃ veda
cakṣur vā etad yajñasya yat tūṣṇīṃśaṃsa. ekā satī vyāhṛtir dvedhocyate,
tasmād ekaṃ sac cakṣur dvedhā
mūlaṃ vā etad yajñasya yat tūṣṇīṃśaṃso.
yaṃ kāmayetānāyatanavān syād iti, nāsya yajñe tūṣṇīṃśaṃsaṃ śaṃsed,
unmūlam eva tad yajñam parābhavantam anu parābhavati
tad u vā āhuḥ: śaṃsed evāpi vai tad ṛtvije 'hitāṃ,
yad dhotā tūṣṇīṃśaṃsaṃ na śaṃsaty.
ṛtviji hi sarvo yajñaḥ pratiṣṭhito yajñe yajamānas,
tasmāc chaṃstavyaḥ śaṃstavyaḥ

ii. 32 (ix. 8). The silent praise is the eyes of the pressings. 'Bhūḥ, Agni, light, light, Agni' is the eyes of the morning pressing. 'Indra, light,

bhuvaḥ, light, Indra' is the eyes of the midday pressing. 'Sūrya, light, light, svar, Sūrya' is the eyes of the third pressing. He prospers with pressings possessed of eyes; with pressings possessed of eyes he goes to the world of heaven who knows thus. The silent praise is the eye of the sacrifice. The exclamation being one is said twice; therefore the eye being one is (manifested) twice. The silent praise is the root of the sacrifice: if he desire of a man 'May he be homeless', he should not recite the silent praise at his sacrifice; verily thus he comes to ruin along with the sacrifice which being without a root falls to ruin. They say 'He should certainly recite; it is not good for the priest, if the Hotṛ does not recite the silent praise, for on the priest rests the whole sacrifice, on the sacrifice the sacrificer; therefore must it be recited.'