(It was narrated that Abu Umamah said: "The Sunnah, when offering the funeral prayer, is to recite Umm Al-Qur'an) the Exxence of the Qur'an) quietly in the first Takbir, Then to say three (more) Takbir and to say the Taslim after the last one"
SahihSahihSahihBook 21 · Hadith 172