法華玄義釋籤 10.14

10.14

退者是退性，乃至進者是進性，以有五種性故羅漢有五種，并法行一人名不動，故有六種阿羅漢也。若退果者，牽於斯那二果亦失，至初果住，法爾然也。

The one who falls away has the disposition to fall away, and so on, up to the one who progresses having the disposition to progress. Because there are five kinds of dispositions, there are five kinds of arhats; and together with one person who acts in accord with the Dharma, called unshakable, there are six kinds of arhats. If one falls away from the fruition, dragging along, the second and third fruitions are also lost, and one abides upon reaching the first fruition; this is naturally the principle.