"An-Nawawi's Forty Hadith" has always been my favorite book of ahadith; it was the first one I ever bought and remains highly recommended reading for anyone interested in the fundamentals of Islam.
However, one thing about this compilation has always bothered me; despite being entitled "Forty Hadith", my copy obviously contains 42 ahadith.
I had originally thought this may just be a quirk of translation (my copy is translated by Ezzeddin Ibrahim and Denys Johnson-Davies), but I have seen the same 42-hadith breakdown used in Sunnah.com's collection; not sure which translator they used, but the translation is clearly different from my own copy.
Having never read the original Arabic compilation, I can't be certain that this isn't yet a translation quirk, but two separate translations with the same clearly-defined numbering scheme casts doubt on that theory.
Presumably, in addition to being one of the most celebrated scholars in Shafi'i jurisprudence, Imam An-nawawi was at least basically competent in counting. Which leaves me scratching my head over the question, why does his famous Forty Hadith have two too many ahadith?
This might seem a silly question, but it's really been driving me nuts for a while.