Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrates: The Prophet (peace and blessings be upon him) said: "Every one of the people of Hell will see his place in Paradise and will say: 'If only Allah Almighty had guided me too!' So this will be a cause of regret for him." And every one of the people of Paradise will see his place in Hell and will say: "Had Allah Almighty not granted me guidance (I would not have come to Paradise)!" So this will be by way of gratitude on his part.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب أهل الجنة / 18660
Hadith Gradingمحدثین:إسنادہ صحیح
Hadith Takhrij«اخرجه احمد فى المسند (512/2) ، أخرجه مسند أحمد برقم: 10274، وأخرجه المستدرك على الصحيحين برقم: 3681»