On the Day of Resurrection, Allah will deliver to every Muslim a Jew or a Christian and say: This is your ransom from Hellfire

The meaning of this Hadīth is explained in the report of Abu Hurayrah (may Allah be pleased with him) which reads: "Each person has an abode in Paradise and an abode in Hell. If the believer enters Paradise, the disbeliever in Hell will take his place in it, because he deserves that due to his disbelief." "This is your ransom from the Hellfire" means that you were exposed to the risk of entering Hell, but this is your ransom.

This is because Allah, the Almighty, decreed a number of inmates to enter Hell and fill it. When the disbelievers enter it because of their disbelief and sins, they will become like ransom for the Muslims. Allah knows best.