Sa'id b. al-'As asked Abu Musa al-Ash'ari and Hudhaifah b. al-Yaman: How would the Messenger of Allah ﷺ utter the takbir (Allah is most great) in the prayer of the day of sacrifice and of the breaking of the fast. Abu Musa said: He uttered takbir four times as he did at funerals. Hudhaifah said: He is correct. Then Abu Musa said: I used to utter the takbir in a similar way when I was the governor of Basrah. Abu 'Aishah said: I was present there when Sa'id b. al-'As asked.
أَنَّ سَعِيدَ بْنَ الْعَاصِ سَأَلَ أَبَا مُوسَى الأَشْعَرِيَّ وَحُذَيْفَةَ بْنَ الْيَمَانِ كَيْفَ كَانَ رَسُولُ اللَّهِ ﷺ يُكَبِّرُ فِي الأَضْحَى وَالْفِطْرِ فَقَالَ أَبُو مُوسَى كَانَ يُكَبِّرُ أَرْبَعًا تَكْبِيرَهُ عَلَى الْجَنَائِزِ فَقَالَ حُذَيْفَةُ صَدَقَ فَقَالَ أَبُو مُوسَى كَذَلِكَ كُنْتُ أُكَبِّرُ فِي الْبَصْرَةِ حَيْثُ كُنْتُ عَلَيْهِمْ وَقَالَ أَبُو عَائِشَةَ وَأَنَا حَاضِرٌ سَعِيدَ بْنَ الْعَاصِ