Zaid bin Talha Taimi says that I heard from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them) that he recited Surah Al-Fatihah and another Surah in the funeral prayer and recited aloud. Then he said: "I recited aloud to let you know that this is also Sunnah, and the Imam can also recite silently."
Hadith Referenceالمنتقى ابن الجارود / كتاب الجنائز / 536
Hadith Gradingغلام مصطفےٰ ظهير امن پوري:صحيح
Hadith Takhrijاز غلام مصطفےٰ ظهير امن پوري:«صحيح، كما مر»