The central area in all mandala is the "Brahmasthana". Mandala "circle-circumference" or "completion", is a concentric diagram having spiritual and ritual significance in both Hinduism and Buddhism. The space occupied by it varies in different mandala – in "Pitha" (9) and "Upapitha" (25) it occupies one square module, in "Mahaapitha" (16), "Ugrapitha" (36) and "Manduka" (64), four square modules and in "Sthandila" (49) and "Paramasaayika" (81), nine square modules. The Pitha is an amplified Prithvimandala in which, according to some texts, the central space is occupied by earth. The Sthandila mandala is used in a concentric manner.