俱舍論疏 10.181

10.181

論「光影炎涼如何成食」，問。若欲界繫香、味、觸三皆是段食，復言口、鼻分分受之。光、影、炎、涼既無口、鼻分分受義，如何成食言不簡也？

The Śāstra says: "How do light, shade, heat, and cold become food?" A question. If the three—odor, taste, and tangibles—bound to the desire realm are all solid food, and it is further stated that they are received piece by piece by the mouth and nose, since light, shade, heat, and cold lack the meaning of being received piece by piece by the mouth and nose, how can they become food without qualification in the statement?