The Buddha in Manichaeism
In Manichaeism, the Buddha (喬達摩悉達多) is considered one of the four prophets of the faith, along with Zoroaster, Jesus and Mani. Mani believed that the teachings of the Buddha, Zoroaster, and Jesus were incomplete, and that his revelations were for the entire world, calling his teachings the "Religion of Light".
Source: Wikipedia — The Buddha in Manichaeism (CC BY-SA 4.0)