Narrated Ibn `Abbas: Umar bin Al-Khattab used to let Ibn Abbas sit beside him, so AbdurRahman binAuf said to Umar, “We have sons similar to him.” Umar replied, “(I respect him) because of his status that you know.” Umar then asked IbnAbbas about the meaning of this Holy Verse : When comes the help of Allah and the conquest of Mecca . . . (An-Nasr 1) Ibn Abbas replied, “That indicated the death of Allah’s Messenger (ﷺ) which Allah informed him of.” Umar said, “I do not understand of it except what you understand.”
حَدَّثَنَا مُحَمَّدُ بْنُ عَرْعَرَةَ، حَدَّثَنَا شُعْبَةُ، عَنْ أَبِي بِشْرٍ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ كَانَ عُمَرُ بْنُ الْخَطَّابِ ـ رضى الله عنه ـ يُدْنِي ابْنَ عَبَّاسٍ فَقَالَ لَهُ عَبْدُ الرَّحْمَنِ بْنُ عَوْفٍ إِنَّ لَنَا أَبْنَاءً مِثْلَهُ. فَقَالَ إِنَّهُ مِنْ حَيْثُ تَعْلَمُ. فَسَأَلَ عُمَرُ ابْنَ عَبَّاسٍ عَنْ هَذِهِ الآيَةِ {إِذَا جَاءَ نَصْرُ اللَّهِ وَالْفَتْحُ} فَقَالَ أَجَلُ رَسُولِ اللَّهِ صلى الله عليه وسلم أَعْلَمَهُ إِيَّاهُ، فَقَالَ مَا أَعْلَمُ مِنْهَا إِلاَّ مَا تَعْلَمُ.
Reference : Sahih al-Bukhari 4430
In-book reference : Book 64, Hadith 452
USC-MSA web (English) reference : Vol. 5, Book 59, Hadith 713