俱舍論記 10.55

10.55

「有說別法至故觸別有」者，說一切有部師言：根、境、識外別有觸體。經證可知。經言身者、所謂體也。又解：多念識等積集名身。故《婆沙》解六愛身云「問：何故名身？答：多愛積集故名為身，謂非一剎那。」

"Some say that a distinct dharma [...] therefore contact exists separately": the Sarvāstivāda masters state that apart from faculty, object, and consciousness, an independent entity of contact exists. The scriptural evidence may be known. When the sūtra speaks of "body" (kāya), it refers to the entity. Another explanation: an aggregation of multiple moments of consciousness and so forth is termed a "body". Hence the Mahāvibhāṣā, explaining the six classes of craving, says: "Question: Why is it called a 'body'? Answer: Because multiple cravings are aggregated, it is termed a 'body', meaning it is not a single moment."