Jaiminīya (Talavakāra) Brāhmaṇa 1.175

1.175

vayo vai yojñāyajñīyam
sa yaṃ kāmayeta yajamānaṃ svargalokassyāditi vayo yajñā vo agnaye ityasya
prastuyāt
vaya evainaṃ śakuno bhūtvā svargaṃ lokaṃ vahati
tadu tadanāyuṣyamiva
pramathitamiva vā etadyadvayo'nālayamiva
tasmādevaṃ na prastuyāt
o yirā yirā cā dākṣāsā iti
yadgirā girā ca iti brūyādagnirvaiśvānaro yajamānaṃ giret
atha yado yirā yirā cā dākṣāsā ityāha - annaṃ vā irā - annādyameva
tadagnervaiśvānarasya mukhato'pidadhāti
īśvaro ha tu rūkṣo bhavitoryado yirā yirā cā dākṣāsā iti brūyāt
o yirā ihā cā dākṣāsā ityeva brūyāt

The Yajñāyajñīya is a bird.
If he desires of a sacrificer, 'May he possess the heavenly world,' he should make the prelude for him: 'Vayo yajñā vo agnaye...'
A bird, becoming a winged creature, conveys him to the heavenly world.
Yet that is not conducive to long life, as it were;
for this bird is shaken, as it were, without a nest, as it were.
Therefore he should not make the prelude thus.
'O yirā yirā cā dākṣāsā...'
If he should say 'girā girā ca', Agni Vaiśvānara would swallow the sacrificer.
When, however, he says 'o yirā yirā cā dākṣāsā'—for irā is food—he covers food right over the mouth of Agni Vaiśvānara.
However, he is liable to become emaciated if he should say 'o yirā yirā cā dākṣāsā'.
He should simply say: 'o yirā ihā cā dākṣāsā'.