Shatapatha Brahmana 13.5.1.13

13.5.1.13

tasyaite paśavo bhavanti aśvastūparo gomṛga iti pañcadaśa paryaṅgyāsteṣāmuktam brāhmaṇamathaita āraṇyā vasantāya kapiñjalānālabhate grīṣmāya kalaviṅkānvarṣābhyastittirīniti teṣāmvevoktam

For this (day) there are those sacrificial animals--'A horse, a hornless he-goat, and a Gomriga,' fifteen 'paryaṅgyas': the mystic import of these has been explained. Then these wild ones--for spring he seizes (three) kapiñgalas, for summer sparrows, for the rainy season partridges: of these (wild animals) also (the mystic import) has been told.