Sam seriously injures Dean?

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I'm looking for some fics where Sam seriously hurts Dean. By this I mean physically, not mentally. The injury could be near death, or just really painful to Dean. Sam might do this by accident, like maybe he screws up on a hunt, or maybe he might want to hurt Dean in some way, but accidentally takes it too far, such as maybe Sam and Dean are in one of their fights, and Sam hits Dean too hard, or possibly he might do something really serious like stab or shoot Dean whilst in a really angry mood. Any of these would be amazing, or any other suggestions. I don't mind pre series fics, and I don't mind Castiel or other characters in it, as long as it is mainly based on Sam and Dean. No love or smut, especially no Cas/Dean or Dean/Sam pairing, all just Sam hurts Dean, and NO DEATH FICS! I know, I'm a horrible person, I just love these kind of fics. for a bonus, maybe Dean doesn't tell Sam how badly he is hurt, until he collapses or something, and Sam is guilty as hell. Thanks in advance! :)