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ahmad:3265Sufyān > Abū al-Zubayr > Saʿīd b. Jubayr > Ibn ʿAbbās

[Machine] I prayed (performed Salah) eight rak'ahs with the Prophet peace be upon him in congregation. I then asked Ibn Abbas, "Why did he do that?" He said, "He wanted to make it easier for his ummah (followers) and not burden them."  

أحمد:٣٢٦٥حَدَّثَنَا سُفْيَانُ عَنْ أَبِي الزُّبَيْرِ عَنْ سَعِيدِ بْنِ جُبَيْرٍ عَنِ ابْنِ عَبَّاسٍ قَالَ

صَلَّيْتُ مَعَ النَّبِيِّ ﷺ ثَمَانِيًا جَمِيعًا وَسَبْعًا جَمِيعًا قُلْتُ لِابْنِ عَبَّاسٍ لِمَ فَعَلَ ذَاكَ؟ قَال أَرَادَ أَنْ لَا يُحْرِجَ أُمَّتَهُ