大毘盧遮那成佛經疏 16.9

16.9

In constructing this Buddha-family maṇḍala, make a circular maṇḍala; its circle is like the moon, white inside like the color of a conch shell. Within this circle, first make a white lotus flower. Upon the flower is a complete triangle; inside this triangle, make it red, and paint a Buddha image within it (as to which Buddha is made, inquire further). Surround the triangle with vajras, as in the diagram. Around the triangle, place dots; the dots are markers (inquire further). On the outer wheel, make rays of light, shaped like parapets. Outside the circle, place dots all around (it is suspected that each of these dots is the station of a principal deity; inquire further; or perhaps syllables may be placed). "Light emanates everywhere" means visualizing light emanating from the Buddha's body and gradually spreading outside the triangle. The "Lord of Mantras" refers to the principal deity, with light emanating from his entire body. In the previous great altar there was also a triangular mudrā, but its application differs from this one. The former was merely a mudrā, whereas here a Buddha or a mudrā is installed, and the ritual procedure is fully provided there.