It was narrated from ‘Aishah that the Messenger of Allah (ﷺ) said the Takbir seven and five times in (the prayer for ‘Eid) Fitr and Adha, apart from the Takbir for Ruku’ (bowing).
Sunan Ibn Majah Book 5, Hadith 478
← Previous Hadith Kathir bin ‘Abdullah bin ‘Amr bin ‘Awf narrated, from his father, from his grandfather, that the Messenger of Allah (ﷺ) said the Takbir in the ‘Eid prayers, seven times in the first Rak’ah and five times in the second.

Sunan Ibn Majah Book 5, Hadith 477 Next Hadith → It was narrated from Nu’man bin Bashir that the Messenger of Allah (ﷺ) used to recite “Glorify the Name of your Lord, the Most High,” and “Has there come to you the narration of the overwhelming?” in the ‘Eid prayer.

Sunan Ibn Majah Book 5, Hadith 479