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كتاب العيدين
13  
The Two Festivals (Eids)
(11)
Chapter: Superiority of deeds on the days of Tashriq
(11)
باب فَضْلِ الْعَمَلِ فِي أَيَّامِ التَّشْرِيقِ
Sahih al-Bukhari 969

Narrated Ibn `Abbas:

The Prophet (ﷺ) said, "No good deeds done on other days are superior to those done on these (first ten days of Dhul Hijja)." Then some companions of the Prophet (ﷺ) said, "Not even Jihad?" He replied, "Not even Jihad, except that of a man who does it by putting himself and his property in danger (for Allah's sake) and does not return with any of those things."

حَدَّثَنَا مُحَمَّدُ بْنُ عَرْعَرَةَ، قَالَ حَدَّثَنَا شُعْبَةُ، عَنْ سُلَيْمَانَ، عَنْ مُسْلِمٍ الْبَطِينِ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم أَنَّهُ قَالَ ‏"‏ مَا الْعَمَلُ فِي أَيَّامِ الْعَشْرِ أَفْضَلَ مِنَ الْعَمَلِ فِي هَذِهِ ‏"‏‏.‏ قَالُوا وَلاَ الْجِهَادُ قَالَ ‏"‏ وَلاَ الْجِهَادُ، إِلاَّ رَجُلٌ خَرَجَ يُخَاطِرُ بِنَفْسِهِ وَمَالِهِ فَلَمْ يَرْجِعْ بِشَىْءٍ ‏"‏‏.‏
Reference : Sahih al-Bukhari 969
In-book reference : Book 13, Hadith 18
USC-MSA web (English) reference : Vol. 2, Book 15, Hadith 86
  (deprecated numbering scheme)