Sahih al-Bukhari 6538
Sahih al-Bukhari · Book 81: To make the Heart Tender (Ar-Riqaq) · Anybody whose account is questioned will surely be punished
Narrated Anas bin Malik:
حَدَّثَنَا عَلِيُّ بْنُ عَبْدِ اللَّهِ ، حَدَّثَنَا مُعَاذُ بْنُ هِشَامٍ ، قَالَ حَدَّثَنِي أَبِ ي، عَنْ قَتَادَةَ ، عَنْ أَنَسٍ ، عَنِ النَّبِيِّ صلى الله عليه وسلم وَحَدَّثَنِي مُحَمَّدُ بْنُ مَعْمَرٍ ، حَدَّثَنَا رَوْحُ بْنُ عُبَادَةَ ، حَدَّثَنَا سَعِيدٌ ، عَنْ قَتَادَةَ ، حَدَّثَنَا أَنَسُ بْنُ مَالِكٍ ـ رضى الله عنه ـ أَنَّ نَبِيَّ اللَّهِ صلى الله عليه وسلم كَانَ يَقُولُ " يُجَاءُ بِالْكَافِرِ يَوْمَ الْقِيَامَةِ فَيُقَالُ لَهُ أَرَأَيْتَ لَوْ كَانَ لَكَ مِلْءُ الأَرْضِ ذَهَبًا أَكُنْتَ تَفْتَدِي بِهِ فَيَقُولُ نَعَمْ. فَيُقَالُ لَهُ قَدْ كُنْتَ سُئِلْتَ مَا هُوَ أَيْسَرُ مِنْ ذَلِكَ " .
Allah's Prophet used to say, "A disbeliever will be brought on the Day of Resurrection and will be asked. "Suppose you had as much gold as to fill the earth, would you offer it to ransom yourself?" He will reply, "Yes." Then it will be said to him, "You were asked for something easier than that (to join none in worship with Allah (i.e. to accept Islam, but you refused).