Original sentence: Amongst Shia Muslims, no hadith is regarded as Sahih, and hadith in general are only accepted if there is no disagreement with the Qur'an.By the ninth century, six collections of Hadiths were accepted as reliable to Sunni Muslims.Shia Muslims however, refer to an alternate tradition of authenticated Hadiths
Edited sentence: Amongst Shia Muslims, hadith are only accepted if there is no disagreement with the Qur'an.By the ninth century, six collections of Hadith were accepted as reliable to Sunni Muslims.Shia Muslims however, refer to a more reseached collection of authentic Hadith