«لا يدخل الجنة أحد إلا أري مقعده من النار لوأساء ليزداد شكرا ولا يدخل النار أحد إلا أري مقعده من الجنة لو أحسن ليكون عليه حسرة»
The Prophet (peace and blessings be upon him) said:
"No one will enter Paradise without being shown the place he would have had in Hell had he done evil, so that his gratitude may increase; and no one will enter Hell without being shown the place he would have had in Paradise had he done good, so that it may become a source of regret for him."
Hadith Referenceصحیح الجامع الصغیر / حرف اللام ألف / 7668