śrī hayagrīva kavacam (atharvaveda mantrakhaṇḍa)

An armour for Hayagriva in which every guard is an aspect of speech or of knowledge, so that the body is covered by the thing the god presides over. The forehead is taken by the one who stands in the middle of the moon; the eyes by the sight that is the shastra; the ears by the one whose self is the sound-brahman; the tongue by the lord of speech; the lips by the one whose self is brahman; the throat by the one whose self is sound; the heart by the one whose self is knowledge. Its meditation is of a figure the colour of a conch and the milk-ocean, seated in the pericarp of a lotus, one hand in the gesture of knowledge and a rosary in it, conch and discus in the others, and unbroken speech issuing from the lotus of his mouth.