Jaiminīya (Talavakāra) Brāhmaṇa 1.175

1.175

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'.