פירוש על קידושין 49:3

R. Hamnuna cannot answer the question of whether a master who castrated his slave must set him free. Does this count as an open blemish, one that others will notice, and therefore the slave goes free. The elders of Nazunia laugh at Hamnuna and changed his name to Karnuna. Evidently Hamnuna is read as meaning a “hot” (ham) fish “nuna.” But Karnuna is a cold fish. Good one elders!