大般涅槃經集解 43.36

43.36

案僧亮曰：七子之中，一子遇病譬凡夫，六子譬六住。慈本緣苦，苦重則慈重。初住已離三塗，六住則永離人天，佛則放捨慈也。智秀曰：第二翻正列放光，滅其身苦事也。

Sengliang notes: Among the seven sons, the one son who encounters illness exemplifies the ordinary person, while the six sons exemplify the six abidings. Compassion fundamentally takes suffering as its object; where suffering is heavy, compassion is heavy. From the first abiding, one has already departed from the three bad destinies; at the sixth abiding, one departs forever from humans and gods, so the Buddha lets go of [this aspect of] compassion. Zhixiu says: The second turn properly lists the emitting of light and the elimination of his physical suffering.