The Prophet (ﷺ) went out and offered a two rak`at prayer on the Day of `Id ul Fitr and did not offer any other prayer before or after it and at that time Bilal was accompanying him.
Sahih al-Bukhari Book 13, Hadith 37
← Previous Hadith On the days of Mina, (11th, 12th, and 13th of Dhul-Hijjah) Abu Bakr came to her while two young girls were beating the tambourine and the Prophet (ﷺ) was lying covered with his clothes. Abu Bakr scolded them and the Prophet (ﷺ) uncovered his face and said to Abu Bakr, "Leave them, for these days are the days of `Id and the days of Mina." `Aisha further said, "Once the Prophet (ﷺ) was screening me and I was watching the display of black slaves in the Mosque and (`Umar) scolded them. The Prophet (ﷺ) said, 'Leave them. O Bani Arfida! (carry on), you are safe (protected)'."

Sahih al-Bukhari Book 13, Hadith 36 Next Hadith → Once a person asked Allah's Messenger (ﷺ) (ﷺ) about the night prayer. Allah's Apostle (ﷺ) replied, "The night prayer is offered as two Rak`at followed by two Rak`at and so on and if anyone is afraid of the approaching dawn (Fajr prayer) he should pray one Rak`ah and this will be a Witr for all the Rak`at which he has prayed before."

Sahih al-Bukhari Book 14, Hadith 1