‘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.
أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ يُكَبِّرُ فِي الْعِيدَيْنِ فِي الأُولَى سَبْعًا قَبْلَ الْقِرَاءَةِ وَفِي الآخِرَةِ خَمْسًا قَبْلَ الْقِرَاءَةِ