I know which hadith you’re speaking of and that’s quite often not related with it’s correct context. This was from when revelation was early and the Prophet ﷺ ordered to stop recording his statements because he feared people would confuse them with the revelation of the Qur’an, after people were able to distinguish between the two he allowed it and in fact within that same hadith narrated by Sayyidina Abu Sa’id al-Khudri he clearly states that the Prophet ﷺ gave people permission to narrate from him. It’s also ironic that they use this hadith as a proof for not following hadith when they don’t even accept hadith in the first place, logic much? (Literally LOL’ing)
Then the claim that hadith wasn’t recorded until 2 centuries later is fallacious and far from truth. Hadith was recorded and written from the time of the Prophet ﷺ his companions and all the way down in a very stringent manner. The official collections of the canonical works were taken from these recordings and orally in a much stricter procedure, hadith didn’t just pop out of nowhere and become Sahih al-Bukhari there was an entire methodology behind it. Let me give you some example of hadith being recorded prior to the canonical period;
- Sayyidina Abu Hurrairah (RA) narrated hadith via 5,374 channels who had books of hadith in his possession and at least 9 of his students wrote hadiths from him.
- Sayyidina Ibn Umar (RA) narrated 2,630 hadiths and he too had written collections. At least 8 of his students wrote from him.
- Sayyidina Umm A’isha (RA)transmitted 2,210 hadith and at least 3 people had them in written form from her including her nephew Urwah who was one of the greatest hadith scholars from amongst the successors.
- Sayyidina Abu Sa’id al-Khudri (RA) who transmitted 1,170 hadiths and al-Khatib states that he wrote them down.
- Sayyidina Ibn Mas’ud (RA) transmitted 748 hadiths and his own book of hadith was possessed by his son.
- Sayyidina Abdullah Ibn Amr al-Aas (RA) who transmitted 700 hadiths. He used to write hadiths while the Prophet ﷺ was alive and he actually gave his book a title; al-Sahifah al-Sadiqah and at least 7 of his students have hadith from him in written form.
- Sayyidina Ali Ibn Abi Talib (RA) transmitted 536 hadiths and at least 8 of his students had them in written form.
So we see that this claim that hadith being recorded later therefore it being unauthentic is not accurate at all. Only those who haven’t really investigated the veracity of hadith literature will propose such ideas because all of this has been dealt with conclusively in many works. Try reading ‘Studies in hadith methodology and literature’ and ‘Studies in early hadith literature’ both by Dr. Muhammad Mustafa al-A’zami which will clear all doubts about hadith. Also look up Dr. Jonathan Brown of Georgetown who is probably one of the best hadith experts in the English language today.