The component phur in the word phurpa is a Tibetan rendering of the Sanskrit word kila, meaning peg or nail. The phurpa is an implement that nails down as well as binds. It was thus by stabbing a phurpa into the earth, and thereby nailing and binding the evil spirits, that Padmasambhava, regarded as the inventor of this implement, consecrated the ground on which the Samye monastery (the first in Tibet) was established in the eighth century, hence pacifying the hostile local deities.
A Short Note on the Color Scheme of the Mandala:
This artwork is a particular example of the special type of paintings known as red thangkas. A style requiring high technical virtuosity, all elements making up these painting are subsumed in the overall red field characteristic to this unique genre. Red is the color of powerful rituals and deeds. It is the color of passion, transmuted to discriminating wisdom. Such artworks are especially relevant in especially vigorous meditation rituals requiring equally potent meditative tools.