Isa is a Hindu god, an aspect of Shiva, mentioned in Puranic texts. He is a dikpala, a guardian of northeastern quarter, and an ekadasarudra, one of eleven rudras. He rides a goat or bull. His color is white, and attributes are five arrows, ax, drum, fruit, hatchet, hook, lute noose, rosary, and staff. He is three-eyed.
Isa is a Buddhist guardian deity, a minor dikpala, attended by a bull. His color is white and attributes are cup, moon disc, and trident. A.G.H.
Jordan, Michael, Encyclopedia of Gods, New York, Facts On File, Inc. 1993, p. 117