حَدَّثَنَا يَعْلَى وَمُحَمَّدٌ الْمَعْنَى قَالَا حَدَّثَنَا الْأَعْمَشُ عَنْ أَبِي ظَبْيَانَ عَنِ ابْنِ عَبَّاسٍ قَالَ أَيُّ الْقِرَاءَتَيْنِ تَعُدُّونَ أَوَّلَ قَالُوا قِرَاءَةَ عَبْدِ اللَّهِ قَالَ لَا بَلْ هِيَ الْآخِرَةُ كَانَ يُعْرَضُ الْقُرْآنُ عَلَى رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فِي كُلِّ عَامٍ مَرَّةً فَلَمَّا كَانَ الْعَامُ الَّذِي قُبِضَ فِيهِ عُرِضَ عَلَيْهِ مَرَّتَيْنِ فَشَهِدَهُ عَبْدُ اللَّهِ فَعَلِمَ مَا نُسِخَ مِنْهُ وَمَا بُدِّلَ
مسند امام احمد بن حنبل · Hadith 3422
It was narrated that Ibn 'Abbas (RA) said: Which of the two recitations do you think came first? They said: The recitation of 'Abdullah. He said: No; rather it was the last one. The Qur'an was reviewed with the Messenger of Allah (PBUH) once every year, and in the year in which he died it was reviewed with him twice, and 'Abdullah learned that, thus he knew what had been abrogated and what had been changed.
Sanad
حَدَّثَنَا يَعْلَى وَمُحَمَّدٌ الْمَعْنَى قَالَا حَدَّثَنَا الْأَعْمَشُ عَنْ أَبِي ظَبْيَانَ عَنِ ابْنِ عَبَّاسٍ