俱舍論頌疏論本 20.30

20.30

及前品已斷者，於修道位九品隨眠，於前八品隨斷何品，名前品已斷。前品已斷，未斷後品。能緣此前品者，於前品猶繫，故前品雖斷而後品猶繫，是名斷非離繫。

As for "And when earlier grades are severed": regarding the nine grades of anuśayas in the stage of the path of cultivation, whichever of the first eight grades is severed is called 'earlier grades are severed'. When an earlier grade has been severed, the later grades have not yet been severed. Those that are capable of cognizing this earlier grade still bind that earlier grade; therefore, although the earlier grade is severed, the later grades still bind it; this is called 'severed, yet not disconnected from bondage'.