Here are the accounts of predestination, as taught within Islam:
Allah permits some to believe in Islam and punishes the ones that he prohibits from being believers:
“Those whom Allah (in His plan) willeth to guide,- He openeth their breast to Islam; those whom He willeth to leave straying,- He maketh their breast close and constricted, as if they had to climb up to the skies: thus doth Allah (heap) the penalty on those who refuse to believe.” (Qur’an: 006.125)
“Whom Allah doth guide, -he is on the right path: whom He rejects from His guidance,-such are the persons who perish.” (Qur’an: 007.178)
Here is one complete explanation regarding how Allah and an angel determine the Predestination of Souls at the birth of each Muslim:
"Allah’s Apostle the true and truly inspired, narrated to us, “The creation of everyone of you starts with the process of collecting the material for his body within forty days and forty nights in the womb of his mother. Then he becomes a clot of thick blood for a similar period (40 days) and then he becomes like a piece of flesh for a similar period. Then an angel is sent to him (by Allah) and the angel is allowed (ordered) to write four things; his livelihood, his (date of) death, his deeds, and whether he will be a wretched one or a blessed one (in the Hereafter) and then the soul is breathed into him. So one of you may do (good) deeds characteristic of the people of Paradise so much that there is nothing except a cubit between him and Paradise but then what has been written for him decides his behavior and he starts doing (evil) deeds characteristic of the people of Hell (Fire) and (ultimately) enters Hell (Fire); and one of you may do (evil) deeds characteristic of the people of Hell (Fire) so much so that there is nothing except a cubit between him and Hell (Fire), then what has been written for him decides his behavior and he starts doing (good) deeds characteristic of the people of Paradise and ultimately) enters Paradise.”
(Sahih Bukhari: Volume 9, Book 93, No. 546)
According to Islamic theology, each person that dies goes to a type of “purgatory” where they are continually shown the end result of their final destination; heaven or hell:
“Ibn Umar reported that Allah’s Apostle (may peace be upon him) said: When a person dies, he is shown his seat morning and evening. If he is one amongst the inmates of Paradise (he is shown his seat) in Paradise and if he is one amongst the denizens of Hell-Fire (he is shown his seat) in the Hell-Fire. Then it is said to him: That is your seat where you would be sent on the Day of Resurrection.”(Sahih Muslim, Book 040, No. 6858)
According to Muhammad, even innocent babies that die for whatever reason have already been predestined for paradise or for hell:
“'A’isha, the mother of the believers, said that Allah’s Messenger (may peace be upon him) was called to lead the funeral prayer of a child of the Ansar. I said: Allah’s Messenger, there is happiness for this child who is a bird from the birds of Paradise for it committed no sin nor has he reached the age when one can commit sin. He said: 'A’isha, per adventure, it may be otherwise, because God created for Paradise those who are fit for it while they were yet in their father’s loins and created for Hell those who are to go to Hell. He created them for Hell while they were yet in their father’s loins.” (Sahih Muslim book, 033, No. 6436)
So much for all the stuff that is in islam - you don’t need it - you are already predestined for heaven or hell.