長阿含經 15.p120

15.p120

“I say to them, ‘Some sentient beings lose their mindfulness after watching each other, one after the other. As a result, they’re born here when their lives end. They slowly grow up, cut off their hair and beards, put on the three Dharma robes, and leave home to cultivate the path. They enter a samādhi of mind through which they became aware of their past births, and then they say, “Those sentient beings that don’t lose their mindfulness while watching each other, one after the other, always abide unchanging. We frequently watched each other and lost our mindfulness after doing so. As a result, we’ve come to this impermanence and are subject to change.”’