Sahih al-Bukhari 4664
Sahih al-Bukhari · Book 65: Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh)) · The Statement of Allah: “...The second of two, when they (Muhammad ﷺ and Abü Bakr were in the cave, and he ﷺ said to his companion (Abu Bakr ) ‘Be not sad (or afraid), surely Allah is with us.'" (V.9:40)
Narrated Ibn Abi Mulaika:
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مُحَمَّدٍ ، حَدَّثَنَا ابْنُ عُيَيْنَةَ ، عَنِ ابْنِ جُرَيْجٍ ، عَنِ ابْنِ أَبِي مُلَيْكَةَ ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ أَنَّهُ قَالَ حِينَ وَقَعَ بَيْنَهُ وَبَيْنَ ابْنِ الزُّبَيْرِ قُلْتُ أَبُوهُ الزُّبَيْرُ، وَأُمُّهُ أَسْمَاءُ، وَخَالَتُهُ عَائِشَةُ، وَجَدُّهُ أَبُو بَكْرٍ، وَجَدَّتُهُ صَفِيَّةُ. فَقُلْتُ لِسُفْيَانَ إِسْنَادُهُ. فَقَالَ حَدَّثَنَا، فَشَغَلَهُ إِنْسَانٌ وَلَمْ يَقُلِ ابْنُ جُرَيْجٍ.
When there happened the disagreement between Ibn Az-Zubair and Ibn `Abbas, I said (to the latter), "(Why don't you take the oath of allegiance to him as) his father is Az-Zubair, and his mother is Asma,' and his aunt is `Aisha, and his maternal grandfather is Abu Bakr, and his grandmother is Safiya?"