What do they call his thighs and feet? The Brahman was his mouth. Of both arms was the Rajanya made, the Rajanya you could view as the Kshatriyas, the warriors and the kings. His thighs became the Vaishya. From his feet, the Sudra was produced. So in the Vedas, and there's some dispute about whether this was originally in the Vedas or about whether it was added later to have a creation story, but it is making reference to these four varnas. But here it is not 100% clear whether it's just talking about the various classes of society.