Reply To: Is there a word in davening that you always mispronounced?

It says המדקדק ק”ש באותיותה מצננין לו את הגהנם whoever watches out to pronounce krias shema properly, the gehanim will be cooled off for him.
Explains the Beis Yosef that he does things out of the ordinary, so Hashem also does things out of the ordinary as the gehinam is usually hot.