俱舍論記 6.19

6.19

「如是已說至心於心隨轉」者，此下第二明俱有因。一正辨俱有、二辨心隨轉。此即正辨俱有。初一句釋俱有義，後兩句指體。

Regarding '[Having thus explained ... the mind with respect to mind-conforming]', this next is the second section, clarifying the coexistence cause (sahabhū-hetu). First, it correctly analyzes coexistence; second, it analyzes mind-conforming [dharmas]. This is the correct analysis of coexistence. The first line explains the meaning of coexistence; the latter two lines designate its substantial identity.