The son of Abu Bakra reported it on the authority of his father that the Apostle of Allah ﷺ had said: The two months of 'Id, Ramadan and Dhu'l-Hijja (are not incomplete).
حَدَّثَنَا يَحْيَى بْنُ يَحْيَى، قَالَ أَخْبَرَنَا يَزِيدُ بْنُ زُرَيْعٍ، عَنْ خَالِدٍ، عَنْ عَبْدِ الرَّحْمَنِ، بْنِ أَبِي بَكْرَةَ عَنْ أَبِيهِ، - رضى الله عنه - عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ
" شَهْرَا عِيدٍ لاَ يَنْقُصَانِ رَمَضَانُ وَذُو الْحِجَّةِ " .
• Sahih Muslim, 1089a
• Sahih Muslim, Vol. 3, Book of Fasting, Hadith 2394
• Sahih Muslim, Book of Fasting, Hadith 2394