四分律行事鈔資持記 3.1025

3.1025

第五略指中。雖是下位，俱發塵沙，與僧無別，故竝指之。

In the fifth, 'Brief Indication': although it is a lower rank, both arouse [mental impressions as numerous as] dust and sand, no different from the saṃgha; hence it refers to them together.