大般涅槃經義記 1.157

1.157

問曰：應身為一向食？亦有不食？佛化種種非是一向，如《轉女身經》說佛應身如全段金剛，無生熟藏、無大小便、無出入息，凡所受食持至十方施諸大會，自無所食。故知應身亦有不食，今據一化，且言食也。

Question: Does the response body eat without exception, or does it also not eat? The Buddha's transformations are manifold and not of one single kind; as the *Sūtra on Transforming the Female Body* says, the Buddha's response body is like a solid block of vajra, without stomach or intestines, without feces or urine, without inhalation or exhalation, and whatever food is received is brought to the ten directions and bestowed upon the great assemblies, without eating anything himself. Therefore we know that the response body also does not eat; here, relying on this single transformation, it is provisionally said to eat.