The Long Āgama Sūtra 14.28

14.28

爾時，帝釋即白佛言：「實爾！世尊！怨結之生，由貪嫉故，使諸天、世人、阿須羅、餘眾生等，刀杖相加。我今聞佛所說，疑網悉除，無復疑也，但不解此貪嫉之生，何由而起？何因何緣？誰為原首？從誰而有？從誰而無？」

Lord Śakra then said to the Buddha, “Indeed, it is, Bhagavān! The arising of the bond of enmity has its origin in greed and jealousy. Therefore, it leads gods, worldly people, asuras, and other sentient beings to take up arms against one another. Now that I’ve heard the Buddha’s explanation, a snare of doubt has been removed. I won’t wonder about it anymore.

“But I don’t understand the arising of this greed and jealousy. Where do they come from? What are their causes and conditions? What’s their source? From what do they come to exist? From what do they cease to exist?”