Thank you for the clarification, which is exactly what I was asking for. So the devil didn't strike them down. Was it mere happenstance then (which is the same as an atheist would believe) or was something supernatural involved?
Do you really believe people choose unbelief? Disobedience, sure that would be a choice we make. But unbelief? You think people choose to believe or not believe something? Are you able to make yourself believe what you don't? I'm not.
Peace
There was nothing supernatural about the deaths of the pilgrims. They died naturally, though it was a tragic death. However, the deaths were preordained, and that is by the Will of Allah Almighty. It was by destiny. It means that the death of all of those hujaaj was ordained by Allah Almighty to happen there at the fixed time, in the manner that it happened. This is a lengthy topic which needs long explanation. I will try to make it short but understandable. May Allah help me to guide you right.
Allah Almighty created mankind with the promise that Allah will give mankind authority and freedom of choice to choose what he wants. If he/she chooses to do good, they will be rewarded with the blessings of Paradise in the Here -After, if they choose the wrong path, they will be punished in Hell for ever. To choose good or the Right path means to believe in the absolute Oneness of God and to believe in the truth of Allah’s Prophet and then to follow Him. Allah Almighty also took responsibility to send down Heavenly guidance for mankind and for that purpose Allah always chose Prophets from among them and revealed heavenly knowledge to them to guide the people. Allah's Command is that Allah's message must be conveyed to people but no one should be forced to accept the message. This is to fulfill Allah's promise of giving them freedom of choice.
On the same bases, if a person decides to make theft or to kill someone innocent, Allah will not use force to stop him/her from committing the crime. But of course, Allah will give him/her chances to get knowledge, use moral sense, use his/her brain, fear God's punishment here and in the Hereafter etc. and thus stop from the crime.
When Allah had decided to create mankind for this very hard test, Allah gave him (the mankind) great wisdom, self-criticizing conscience, moral sense and divine Books for complete guidance. If a man, in spite of all those sources of guidance rejects the truth and choses to follow Satan which is the enemy of mankind (another long story of Satan's enmity and jealousy with mankind and Satan's challenge to Almighty Allah that he will try to stray man and ruin him so that he becomes the dweller of Hell forever. You can see all these details in the translation and commentary of the Holy Qur'aan. We are also ready to answer your questions in the light of the same.) then it will be Allah's Justice to punish him/her severely in Hell.
Now I come to the description about destiny (luck, fortune). This is a part of the Muslim's belief that destiny is in Allah's Hands, all good and evil there of comes only from Allah. Death and life are all in the power of Allah. None else can ordain it. Also we believe that every body's life is already written in his/her fortune and death will come to every person on its fixed ordained time without the difference of a single moment. Here some people make questions that if Allah ordained everything then why criminal should be punished for crime? Some scholars explained the principle of destiny in a very good way as I understood it very well. They said:
Allah has perfect knowledge of all the seen and unseen things as well as of the present, past and future. Allah ordained the things in such a way that every effect is linked with a cause. If the cause falls in the hands of mankind then they are responsible and reward able or punishable as the case may be. If the cause does not fall in the hands of man then they are not questionable.
Keeping the above explanation in mind we can say that the death of the hujaaj was ordained there and then by Allah Almighty. If the cause of the stampede was just perchance without any body’s evil intention, then no one will be punished for it and we, all Muslims, have to be patient. If, on the other hand, it was planned by someone’s evil intention, then surely they cannot escape the justice of Allah and surely they will be in the everlasting Fire. If Allah so wills, Allah will bring humiliation and punishment on them in this world too.
Remember that we, mankind, are created for a very hard test. Our aim must be to pass the test. The foremost requirement for passing the test is to believe in only One God Who is The Creator of all and the second obligation is to obey Allah’s Commands. For that purpose we must believe in the Truth of all Prophets and all Heavenly Books; and we must follow the last Book which is fully preserved for guidance. It is the Holy Qur’aan which was sent down to the Final Prophet Muhammad (Allah’s blessings and peace be on him).
I advise you sincerely to read and understand the Holy Qur’aan at least once so that at the time of death you don’t regret for not reading it.