[Machine] The Messenger of Allah ﷺ used to perform Takbir in the first Rak'ah of the two Eids by saying "Allahu Akbar" (Allah is the Greatest) seven times, and in the second Rak'ah, he would say it five times before the recitation, and so on.
أَنَّ رَسُولَ اللهِ ﷺ كَانَ يُكَبِّرُ فِي الْعِيدَيْنِ فِي الرَّكْعَةِ الْأُولَى بِسَبْعِ تَكْبِيرَاتٍ وَفِي الثَّانِيَةِ خَمْسَ تَكْبِيرَاتٍ قَبْلَ الْقِرَاءَةِ وَكَذَلِكَ