Hayagriva or Hayagreeva is considered an important Avatar of Vishnu. Hayagriva came to be worshiped and revered as very personification of all knowledge (Jnananandmayam devam), speech, vidya(education)- of all types, a victory, of brightness of wisdom over darkness of ignorance and the supremacy of the divine over the demoniac. Worshiped as the God of knowledge and wisdom. He is the Guru of Goddess Saraswati - the Goddess of Wisdom. Hayagriva is represented with a human body and a horse’s head, brilliant white in color, with white garments. His blessings are sought when beginning study of both sacred and secular subjects. Represented here with four hands, with one holding a sword; another holds books of wisdom, and the other two hold the Conch and Discus.
https://en.wikipedia.org/wiki/Hayagriva
