'Amr bin Shu'aib from his father on the authority of his grand father:
The Prophet of Allah (ﷺ) said: "The Takbir in ('Eid) al-Fitr prayer are seven in the first Rak'ah and five in the second, and the recitation of the Qur'an in both is after the Takbir."
[Reported by Abu Dawud].