法華玄論 9.203

9.203

二者就迹中論一質二見者，身子見釋迦土穢、梵王見釋迦土淨，身子見為人土、梵王見為天土，而釋迦淨土非如此人天土，故釋迦土如寶莊嚴土，而人天緣自見人天二土，故名一質二見也。

Second, to discuss 'one substance, two perceptions' within the trace: Śāriputra saw Śākyamuni's land as defiled, while the Brahmā King saw Śākyamuni's land as pure; Śāriputra saw it as a human land, while the Brahmā King saw it as a heavenly land. Yet Śākyamuni's pure land is not such a land of humans and devas; thus Śākyamuni's land is like a land adorned with jewels, while the conditions of humans and devas cause them naturally to see the two lands of humans and devas. Therefore it is called 'one substance, two perceptions.'