Narrated Anas bin Malik: Allah's Apostle never proceeded (for the prayer) on the Day of `Id-ul-Fitr unless he had eaten some dates. Anas also narrated: The Prophet used to eat odd number of dates.
Hadith Referenceصحيح البخاري / كتاب العيدين / 953
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة