[Regarding] Ashkelonian grapnels that broke but their hook remains intact, they are tamei. A pitchfork, a winnowing fork, a rake, and similarly a head comb that had one of their prongs removed and one replaced them with [a prong] of metal, they are tamei. And concerning all of these R’ Yehoshua said: The Scribes have introduced a novel principle, and I cannot answer it.