Dummedha-Jātaka: The Folly of Jealousy
… to hear the praises of the Buddha's utter wisdom. Entering the Hall, the Master asked what was the subject of their converse. And when they told him,
he said, "Brethren, as now, so in former times Devadatt…
The Dummedha-Jātaka recounts an episode from the life of the Buddha, where he reflects on the story of Devadatta. Jealous of the Buddha's wisdom and Perfections, Devadatta's madness led to his folly.