Talha bin Abdullah bin Awf, the nephew of Sayyiduna Abdur Rahman bin Awf (may Allah be pleased with him), says: I offered the funeral prayer behind Sayyiduna Abdullah bin Abbas (may Allah be pleased with them). In it, he recited Surah Al-Fatihah along with another Surah, and he recited aloud. When he finished with salam, I held his hand and asked him the reason for this. He replied: "This is the Sunnah and the truth." This narration is also mentioned with the chain of Muhammad bin Yahya.
Hadith Referenceالمنتقى ابن الجارود / كتاب الجنائز / 537
Hadith Gradingغلام مصطفےٰ ظهير امن پوري:إسناده صحيح كالشمس
Hadith Takhrijاز غلام مصطفےٰ ظهير امن پوري:«إسناده صحيح كالشمس: سنن النسائي: 1987، اس حدیث کو امام ابن حبان رحمہ اللہ (3071) نے صحیح کہا ہے، امام حاکم رحمہ اللہ فرماتے ہیں: ”قَدْ أَجْمَعُوا عَلَى أَنَّ قَوْلَ الصَّحَابِيِّ: سُنَّةٌ، حَدِيثٌ مُّسْنَدٌ“ (المستدرك على الصحيحين: 358/1)۔»