1) Like the Christian Gospels, the Muslim Hadith were written by NON WITNESSES who lived 150 - 200 years after their prophets died.
Statements or hadiths by NON WITNESSES about their prophets is never accepted as TRUTH in any court of law because they only hear it from others and never witnessed it. The nature of their statements is "hearsay" or "gossip" by non witnesses like themselves.
The word of Allah in the Quran is the religion of Allah.
The word of man or hadith of Ulamas are what Allah says, lahwal hadith..Q31:6"Some people use lahwal (fake) hadith to mis;ead others from Allah's path(Islam) ...and make a mockery of it (Islam). For them is a painful doom"
2) The hadith Contradicts the Quran.
Muslims who contradict the Quran are Kafir.
The folowing are the proofs.
2.1) Allah / Quran saysthat the wuduk Q5:5 involves 4parts of the body. but the hadith Ulamas say wuduk involve 8 parts of the body.Hadith Muslim who reject or rubbish binned Allahs words Q5:6 and take the Ulamas word on wuduk have rejected Allah and takeh the Hadith Ulamas as their god.
2.2)Similarly Hadith Muslims have rejected or rubbish binned Allah's 3 times salat as per Q11:114 and taken the Ulamas word thats says 5 times solat negotiated a donkey flyig prophet after the fake Allah of the hadith foolishly prescribed 50 solats a day, which is an impossible target.
2.3) The hadith that says "Kill the apostate / There is compulsion in religion" contradicts the Quran Q2:256 "There is no compulsion in the deen/religion".
Therefore the Hadith Islam is not Islam of Allah of the Quran but the religion of Hadith Ulamas who made themselves gods besides Allah and a new religion disguised as Islam.