The setting: Algiers, mid1500's (around the era of the Barbary Pirates). A medieval shop of assorted curiosities, perhaps like a modern-day pawnshop with a Muslim owner. The MC is trying to buy a dagger from him, which is supposed to be cursed, making its owner murder a close family member during a happy time.
I've searched Google and Wikipedia with terms like "treatment of Quran copies," "selling Quran copies," "murder in Quran," and a couple of others I forget right now, but it hasn't cleared everything up, mostly because of the setting. So my questions are:
1. I know that certain rituals/practices must be followed before touching the actual book, but what about selling it? How possible would it be for a merchant (of that era) to have a copy out in the open? Not just lying around, but, say in a certain shelf. (and not taking the rarity of books in general into consideration).
2. Would it be appropriate to keep an allegedly cursed object in a box under the Quran, in an attempt to keep the evil at bay?
3. I know there's this passage in Quran that's against murder. In my story, the merchant brings this up to refuse the sale, but I'm having a hard time determining how to phrase this, by showing both his faith and avoid being too generic. For instance, could he say something like "The Prophet (peace be upon him) has warned us against murder, so I can't sell this to you knowing you'll go kill someone." No matter how I tweak this, it still doesn't sound authentic, so any feedback is much appreciated.
(I can scrap 1 & 2 if they don't work, but I really need 3).