“Allah promises only to protect Quran and not Sunnah.”
This is the most repeated argument of Inkara-hadith (Hadith rejectors). Lets analysze their argument.
Allah says in quran “Indeed, it is We who sent down the dhikr and indeed, We will be its guardian.”
But i want to clear that the word “dhikr” and its derivative has numerous meanings in the Quran. Yes i agree it used for the Quran for eg
” And this is a blessed (dhikr) Reminder which We have sent down, will you then (dare to) deny it? (Surah 21 ayat 50)
But it some time also used for sunnah and for other purposes for eg Allah says
” We revealed to you the (dhikr) reminder that you may make clear to the people what was sent down to them (ie Quran). (Surah 16; ayat 44)..”
“O you who have believed, when [the adhan] is called for the prayer on the day of Jumu‘ah [Friday], then proceed to the (dhikr) remembrance of Allah ( Surah 62 ayat 9)”.
The first ayat is used for sunnah and the second one is used for other purpose. So it is clear now that Allah promises not only to protect quran but also sunnah of prophet Muhammad (P.B.U.H). The text of the quran will not be protected if its understanding which is sunnah is not protected. Furthermore,if anyone wants to restrict the meaning of “Dhikr” to the Quran then they need to present a sound proof.