Allah Promised hell for his followers:
Sura 3:185, "Every soul shall have a taste of death: And only on the Day of Judgment shall you be paid your full recompense. Only he who is saved far from the Fire and admitted to the Garden will have attained the object (of Life): For the life of this world is but goods and chattels of deception."
This Suras from Quran very clearly says that after death everyone will go to hell fire then judgment.. When a person went to hell fire then how and why it is possible that he/she can come out from hell fire and go to paradise.. no way.. This verse does not say anything about eternal life. This verse very clearly says that every believer in Allah is tasting death means they did not get the life while Jesus promised eternal life and heaven as we read in
John 10:10 "The thief does not come except to steal, and to kill, and to destroy. I have come that they may have life, and that they may have it more abundantly.
And also every soul is going to hell fire till the day of judgment means they are not reaching heaven. So of course Allah promised hell fire for his believers. There is no chance to go to heaven once you go to hell. Jesus can save you when you are still in this world as He said in John 3:15 "that whoever believes in Him should not perish but have eternal life.
John 3:16 "For God so loved the world that He gave His only begotten Son, that whoever believes in Him should not perish but have everlasting life.
How a person can save himself/herself from hell fire when he/she is already in hell fire? And this verse says that they will be there till the time of Day of Judgment. Do you think a person who is already in hell will get a seat in heaven after judgment? Judgment is a day when people get their sentence and verdict.. and there are no second chances to "make it to heaven" once you have been cast into hell.
And he claims all those who don't follow Islam are going to hell..so according to Muhammad, everyone is going to hell...
"If anyone desires a religion other than Islam (Submission to Allah), Never will it be accepted of him; and in the Hereafter he will be in the ranks of those who have lost."(Qur'an 3:85)