俱舍論頌疏論本 3.30

3.30

釋曰：身不悅名苦者，身謂身受，即五識相應受也。身謂所依，受依身起，名為身受。身之受故，依主釋也。言不悅者，是損惱義。於身受內能損惱者，名為苦根。

The commentary explains: "Physical displeasure is called suffering" means: "physical" refers to bodily feeling, which is feeling associated with the five sense-consciousnesses. The body is the physical basis; because feeling arises depending on the body, it is called physical feeling. Because it is the feeling of the body, it is a genitive tatpuruṣa compound (ṣaṣṭhī-tatpuruṣa). "Displeasure" has the meaning of damaging and afflicting. That which can damage and afflict within bodily feeling is called the suffering faculty (duḥkhāndriya).