Translation:Mishnah/Seder Zeraim/Tractate Demai/Chapter 2/2/Translation

One who takes it on himself to be trustworthy must tithe that which he eats,

And that which he sells, and that which he buys, and he may not stay as a guest for ignorant people.

R’ Yehuda says, “Even if he is a guest of ignorant people, he is trustworthy.”

They said to him, “On his own self, he is not trustworthy, how can he be reliable with that which belongs to another?”