Ramadan: Have any of you heard of the Banu Qurayza incident?

History is witness that muslims have always picked and chosen what suits them when. Many muslims have claimed that the interpretation and knowledge of the Quran is from the Hadiths as Quran is in Arabic. Even otherwise, Quran and the Hadiths are inseparable. But muslims will always deny what is inconvenient to them and which exposes Mohammad's evil deeds.