Śatapatha Brāhmaṇa ("of a hundred paths") 2.1.2.6

2.1.2.6

rohiṇyāmagnī ādadhīta | rohiṇyāṃ ha vai prajāpatiḥ prajākāmo 'gnī ādadhe sa prajā asṛjata tā asya prajāḥ sṛṣṭā ekarūpā upastabdhāstasthū rohiṇya ivaiva tadvai rohiṇyai rohiṇītvam bahurhaiva prajayā paśubhirbhavati ya evaṃ vidvānrohiṇyāmādhatte

He may also set up his fires under (the asterism of Rohinî. For under Rohinî it was that Pragâpati, when desirous of progeny (or creatures), set up his fires. He created beings, and the creatures produced by him remained invariable and constant, like (red) cows (rohinî): hence the cow-like nature of Rohinî. Rich in cattle and offspring therefore he becomes whosoever, knowing this, sets up his fires under Rohinî.