俱舍論記 4.156

4.156

「論曰至細性名伺」者，心之麁性名尋，心之細性名伺。於心所中各別有體，與心相應，非體即心。言心麁、細，依主釋也。

Regarding the passage from "The commentary says:" up to "subtle nature is called vicāra": The gross nature of the mind is called vitarka; the subtle nature of the mind is called vicāra. Among the mental concomitants (caitta), each has a distinct entity, and they are associated (samprayukta) with the mind; their entity is not the mind itself. Speaking of grossness and subtlety of the mind is a tatpuruṣa compound (dependent genitive compound).