The ninth avatara of Vishnu was Buddha.
Many years ago, there was a war between the devas and the asuras in which the demons managed to defeat the gods. The gods went running to Vishnu for protection and Vishnu told them that Mayamoha would be born as Buddha, the son of Shuddhodana. Such were the illusions that Buddha created, that the asuras left the path indicated by the Vedas and became Buddhists. These dastardly creatures performed ceremonies that were a sure ticket to Naraka.