Sunan an-Nasa'i #1988 · The Book of Funerals

Sunan an-Nasa'iIt was narrated that Talhah bin 'Abdullah said
Sunan an-Nasa'i · Book 21 · The Book of Funerals
Sunan an-Nasa'i · كتاب 21 · كتاب الجنائز
"I offered the funeral prayer behind Ibn 'Abbas and I heard him reciting Fatihat Al-Kitab. When he finished I took him by the hand and asked him. 'Did you recite?' He said: 'Yes, it is the truth and the Sunnah
أَخْبَرَنَا مُحَمَّدُ بْنُ بَشَّارٍ، قَالَ حَدَّثَنَا مُحَمَّدٌ، قَالَ حَدَّثَنَا شُعْبَةُ، عَنْ سَعْدِ بْنِ إِبْرَاهِيمَ، عَنْ طَلْحَةَ بْنِ عَبْدِ اللَّهِ، قَالَ صَلَّيْتُ خَلْفَ ابْنِ عَبَّاسٍ عَلَى جَنَازَةٍ فَسَمِعْتُهُ يَقْرَأُ، بِفَاتِحَةِ الْكِتَابِ فَلَمَّا انْصَرَفَ أَخَذْتُ بِيَدِهِ فَسَأَلْتُهُ فَقُلْتُ تَقْرَأُ قَالَ نَعَمْ إِنَّهُ حَقٌّ وَسُنَّةٌ ‏.‏
Reference : Sunan an-Nasa'i 1988In-book reference : Book 21, Hadith 171