The Benefits of Guarding One's Mouth

The Benefits of Guarding One’s Mouth:
It is also said in the name of Rav Pinchos of Koretz zy”a that when a person wants to say something but refrains from speaking because he suspects it may be forbidden to say what he wanted to say, he has done a great thing that only Hashem knows about, and the prosecuting forces cannot make any claims against this deed.

It is further said in the name of Rav Uri of Strelisk zy”a that whenever a person refrains from saying something negative or something forbidden, it is considered as if he fasted for 40 days. The Belzer Rebbe zy”a added, “And I say that it is even more than that. It is as if he fasted for 120 days.”