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.
Reference: Sunan Abi Dawud 1153 In-book : Book 2, Hadith 764 English translation : Book 2, Hadith 1149
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