首楞嚴義疏注經 4.552

4.552

正云笈房鉢底，此云牛相。經云「我有口業，於過去世輕弄沙門，世世生生有牛呞病。」呞者，牛凡食後常事虛哨，時人稱為牛呞也。異舌者，未見別緣，或可既云牛相，即其牛舌也。而能辨了人所食味，故云異舌知味。

Properly called Gavāmpati, translated here as "Bovine Appearance." A sūtra states: "I have karma of speech: in past lives I slighted and mocked a śramaṇa, and life after life I have had the disease of bovine rumination." Rumination refers to how cattle, after eating, constantly engage in empty chewing; people of the time referred to it as "cattle chewing." Regarding the abnormal tongue, no other specific circumstance has been seen; or perhaps since it says "bovine appearance," it is indeed a cow's tongue. Yet he is able to discern the tastes of what humans eat; hence it says "tastes flavors with an abnormal tongue."