佛說觀佛三昧海經 6.5

6.5

When the Buddha spoke these words, the great assembly in the gathering saw the hells, hungry ghosts, and animals; through the power of the samādhi of the marks of liberation, all the sentient beings were caused to recognize their past lives on their own, seeing that those undergoing suffering were all, during immeasurable kalpas in previous lives, their parents, masters, disciples, and good kin and friends. Having seen this, they wept, bowed to the Buddha, and said: 'Bhagavat! We now, through the Buddha's power, see the suffering sentient beings, and all of them are our parents, masters, and elders.'