維摩經略疏 5.22

5.22

「於阿耨至退轉」，六、諸比丘得不退轉。圓教似解不退即鐵輪位，若真不退即銅輪初住。往昔發心應是五品不定位耳，或是通別不退，未可定判。

"In anuttara... non-retrogression" is the sixth [part], the monks attaining non-retrogression. In the perfect teaching, non-retrogression of semblance understanding is the iron-wheel rank; true non-retrogression is the first dwelling of the bronze wheel. Their past resolve was likely just the unfixed rank of the five grades, or perhaps the non-retrogression of the shared or distinct [teachings]; it cannot be definitively determined.