俱舍論頌疏論本 10.69

10.69

段欲體唯三者，明段食體，如是段食唯欲界繫，體唯三塵，謂香、味、觸。言段食者，可成段別而飲噉故，謂以口、鼻分分受之。光影、炎涼及塗洗等雖無分段，有資益故，亦名為食，故段食言從多分說。光影炎涼名為食者，寒遇日光及值炎火，熱逢樹影并得風涼，有益於人，皆名食也。

'Physical food belongs to desire and has only three substances' clarifies the substance of physical food. Such physical food is bound exclusively to the desire realm, and its substance comprises only three sense data, namely scent, taste, and tangibles. It is called 'morsel/physical food' because it can be divided into portions to be eaten and drunk; that is, it is taken in portion by portion through the mouth and nose. Although light, shadow, warmth, cool, ointments, washing, and so forth lack portions, because they provide nourishment, they are also called food; therefore, the term 'physical/morsel food' is stated based on the majority. The reason light, shadow, warmth, and coolness are called food is that meeting sunlight when cold or encountering a fire, finding tree shade when hot, and feeling cool breezes all benefit a person; thus they are all called food.