一切經音義 24.20

24.20

不𨓤（吐內反經從艮作退俗字也言不𮞡者決定勇進之義也八地已上總名不退說文云日行遲也從日從久從辵會意字也或作𨑧𨔫並古字也又音衰）。

Non-retrogressing 不𨓤 (fanqie: 吐內 [tuì]; the sūtra writes it with the radical 艮 as 退, which is a vulgar character; "not retrogressing" has the meaning of being resolute and courageously progressing; from the eighth stage upward, it is collectively termed "non-retrogressing"; the Shuowen says: "The sun moving slowly; formed from 日, 久, and 辵; an ideographic character"; it is also written as 𨑧 and 𨔫, both being ancient characters; it also has the pronunciation shuī).