Is blood donation considered a form of striving (jihad) if it is sincerely for the sake of Allah, along with ensuring physical health, and what is the ruling on organ donation?

Shed blood is impure (najis) and it is forbidden to benefit from it, by consensus, except in cases of extreme necessity to save a patient's life, in which case it is permissible to benefit from it. Donating blood is permissible provided it does not harm the donor, and this is considered a great charity, especially if it saves a human life, in accordance with the Almighty's saying: "And whoever saves a life - it is as though he had saved all mankind."