Moses received the Torah from Sinai, and transmitted it to Joshua, and Joshua to the Elders, and the Elders to the Prophets, and the Prophets transmitted it to the Men of the Great Assembly. They said three things: Be deliberate in judgment, develop many students, and make a fence around the Torah.

[If] one acquires food utensils from a gentile —- if its customary way is to immerse, he should immerse [it]; to boil, he should boil [it]; to purge in fire, he should purge [it] in fire. The spit and the grill, one purges in fire; the knife, one polishes and it is purified.