Sahih Muslim | Book 6 | Hadith Number 2395

Narrated by 'Abd Ar-Rahman b. Abu Bakra
'Abd Ar-Rahman b. Abu Bakra reported on the authority of Abu Bakra that the Apostle of Allah (may peace be upon him) had said: The months of 'Id are not incomplete. And in the hadith narrated by Khalid (the words are): "The months, of 'Id are Ramadan and Dhu'l-Hijja.