tasmai bhavan haya shiras tanuvam hi bibhrad
veda-druhav atibalau - madhu-kaitabhakhyau
hatvanayac chruti-ganamsh ca rajas tamash ca
sattvam tava priyatamam tanum amananti

My dear Lord, when You appeared as Hayagriva, with the head of a horse, You killed two demons known as Madhu and Kaitabha, who were full of the modes of passion and ignorance. Then You delivered the Vedic knowledge to Lord Brahma. For this reason, all the great saints accept Your forms as transcendental, untinged by material qualities.

A.C. Bhaktivedanta Swami Prabhupada
Srimad Bhagavatam 7.9.37