وَعَنْ طَلْحَةَ بْنِ عَبْدِ اللَّهِ بْنِ عَوْفٍ
قَالَ: صَلَّيْتُ خَلْفَ ابْنِ عَبَّاسٍ عَلَى جَنَازَةٍ فَقَرَأَ فَاتِحَةَ الْكِتَابِ فَقَالَ: لِتَعْلَمُوا أَنَّهَا سُنَّةٌ
Talha ibn Abdallah ibn Auf said he prayed behind Ibn Abbas at a funeral and he recited Fatihat al-Kltab (Qur’an, sura i). He then said that it was to let them know it was a sunna.