淨名經集解關中疏 1.396

1.396

彼外道六師。富蘭那迦葉　此二明同六師。肇曰。姓迦葉字富蘭那。其人起邪見。謂一切法斷滅性空無君臣父子忠孝之道。

"'and those six heterodox teachers—Pūraṇa Kāśyapa," This second part clarifies being identical with the six teachers. Sengzhao says: His surname was Kāśyapa and his given name was Pūraṇa. This person gave rise to heterodox views, asserting that all dharmas are subject to annihilation and inherently void, lacking the ways of ruler and minister, father and son, loyalty and filial piety.