Hadith 5563
Abu Sa'id al-Khudri told that he went to God's messenger and asked him to tell him who would be strong enough to stand on the day of resurrection of which God who is great and glorious said, "A day when mankind will stand before the Lord of the universe."1 He replied, "It will be made easy for the believer, so that it will be for him like the prescribed prayer." He told that God's messenger was asked about "a day whose extent is fifty thousand years2," how men could endure the length of this day, and replied, "By Him in whose hand my soul is, it will be made easy for the believer so that it will be easier for him than the prescribed prayer he observes in this world." [1] Quran; 83:6 [2] Quran; 70:4 Baihaqi transmitted the two traditions in Kitab al-ba'th wan nushur.
وَعَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ أَنَّهُ أَتَى رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَ: أَخْبِرْنِي مَنْ يَقْوَى عَلَى الْقِيَامِ يَوْمَ الْقِيَامَةِ الَّذِي قَالَ اللَّهُ عَزَّ وَجَلَّ: (يَوْمَ يَقُومُ النَّاسُ لربِّ الْعَالمين)؟ فَقَالَ: «يُخَفَّفُ عَلَى الْمُؤْمِنِ حَتَّى يَكُونَ عَلَيْهِ كَالصَّلَاةِ الْمَكْتُوبَة» وَعَنْهُ قَالَ: سُئِلَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ عَنْ (يَوْمٍ كَانَ مِقْدَارُهُ خَمْسِينَ ألف سنةٍ) مَا طُولُ هَذَا الْيَوْمِ؟ فَقَالَ: «وَالَّذِي نَفْسِي بِيَدِهِ إِنَّهُ لَيُخَفَّفُ عَلَى الْمُؤْمِنِ حَتَّى يَكُونَ أَهْوَنَ عَلَيْهِ مِنَ الصَّلَاةِ الْمَكْتُوبَةِ يُصَلِّيهَا فِي الدُّنْيَا» . رَوَاهُمَا الْبَيْهَقِيُّ فِي كِتَابِ «الْبَعْثِ وَالنُّشُورِ»