The world is Prison for Believer and Paradise for Disbeliever (raah.tv)

'and what is the matter with you that you struggle not in the cause of Allah and for the oppressed among men and women and children who say for the oppressed it doesn't say just Muslims for the oppressed are lowered take us out of this city of oppressed people and appoint for us from yourself a protector, and appoint for us from yourself a helper.' [Al-Quran]

The world is the Prison for Believer and the Paradise for Disbeliever (Hadith)