Śatapatha Brāhmaṇa ("of a hundred paths") 1.2.3.8

1.2.3.8

yadā piṣṭānyatha lomāni bhavanti | yadāpa ānayatyatha tvagbhavati yadā saṃyautyatha māṃsam bhavati saṃtata iva hi sa tarhi bhavati saṃtatamiva hi māṃsaṃ yadā śṛto 'thāsthi bhavati dāruṇa iva hi sa tarhi bhavati dāruṇamityasthyatha yadudvāsayiṣyannabhighārayati tam majjānaṃ dadhātyeṣo sā sampadyadāhuḥ pāṅktaḥ paśuriti

When it (the rice-cake) still consists of rice-meal, it is the hair. When he pours water on it, it becomes skin. When he mixes it, it becomes flesh: for then it becomes consistent; and consistent also is the flesh. When it is baked, it becomes bone: for then it becomes somewhat hard; and hard is the bone. And when he is about to take it off (the fire) and sprinkles it with butter, he changes it into marrow. This is the completeness which they call 'the fivefold animal sacrifice.'