金剛經纂要刊定記 2.146

2.146

This clarifies the affix (pratyaya) and the verbal root (dhātu). Ruo (jñā) is the verbal root; both ban (pra) and na are affixes. If one takes ban (pra) as the affix assisting the ruo (jñā) root, it is named wisdom (hui / prajñā). If one takes na as the affix assisting the ruo (jñā) root, it is named knowledge (zhi / jñāna). Like saying "monastic person," "lay person," and so forth. The difference in names refers to saying "knowledge" and saying "wisdom"; the difference in meanings refers to decisive determination and discernment. Here, because the meanings differ, the names are also made to differ.