Before Sunnis come to us with a weak hadith and say 'Look! The Shia believe the Quran is incomplete!'. First we should say, they are weak and were compiled by fallible people. We don't believe the Quran is incomplete. Then we should say 'How about these which you say are completely perfect?'(I'm only quoting from Sahih Bukhari and Sahih Muslim). Umar ibn al Khattab said, Certainly Allah sent Muhammad with the truth and revealed him the Book. One of the revelations which came to him was the verse of stoning. We read it and understood it. The Messenger of God stoned and we stoned after him. I am concerned that if time goes on, some one may say ‘ By God we do not find the verse of stoning in the Book of God ‘; thus, the Muslims will deviate by neglecting a commandment the Almighty revealed. Al-Bukhari recorded in his Sahih, v8, pages 209-210 According to Umar, there was a verse of stoning revealed when we know there is no verse of stoning, and he's concerned that people will stop stoning because that bit is missing. 3 options here:1) Bukhari isn't sahih 2) Umar is a liar 3) the Quran is actually incomplete. It's obviously the first or the second. If I were not afraid of the fact that people may say that ‘Umar has added to the Qur’an extra (verses), I would have written the Verse al- Rajm (stoning to death of married adulterers) with my own hands. Sahih al-Bukhari, vol 9, p212.Here, Umar says he would have added the verse with his own hands if he wasn't afraid of the people (whole host of implications about the persona of Umar there, but that is a different topic). Aisha said that the Qur’anic verse enjoining stoning for adultery was written on a leaf, but the leaf was accidentally eaten by a goat while the Prophet Muhammad was on his death-bed, and thus the verse was lost. Sahih Muslim, the book of nursing (al-Ridha), v10 pages 29 (Arabic). We used to read a Chapter from the Qur’an similar to Bara’ah in length and seriousness, but I forgot it. I can remember from the Chapter only the following words:Should a son of Adam own two valleys full of wealth, he should seek a third valley and nothing would fill Ibn Adam’s abdomen but the soil.Sahih Musllim Chapter CCCXCI, p500, Tradition #2286. If I were a Sunni and I read those ahadith, I would have to ponder as to whether these 'sahih' books are actually sahih- just a side note- the book of Nikah in Sahih Bukhari contains some shocking ahadith which are an insult to the Messenger (pbuh) and I will make an article about that inshallah. To conclude, Bukhari and Muslim think that that there was an ayah about stoning, a whole Surah the size of al Bar'ah is missing, and, oh, I almost forgot, Allah can't protect his holy book from a goat.