俱舍論疏 2.30

2.30

The treatise says: "Apart from food, smell and taste... therefore the tactile is not absent." This is the answer. Apart from food, smell and taste have no other function; since there is no material food above, smell and taste are also absent. The tactile has functions apart from material food, having the distinct functions of supporting the faculties and supporting clothing, and so forth; therefore, although the form realm lacks material food, it does possess the tactile dhātu.