‘Abdur-Rahman bin Sa’d bin ‘Ammar bin Sa’d, the Mu’adhdhin of the Messenger of Allah (ﷺ), narrated from his father, from his father, from his grandfather, that the Messenger of Allah (ﷺ) used to say the Takbir in the ‘Eid prayer, seven times in the first (Rak’ah) before reciting Qur’an, and five times in the second before reciting Qur’an

English translation · Sunan Ibn Majah