حَدَّثَنَا عُثْمَانُ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا وَكِيعٌ، حَدَّثَنَا الأَعْمَشُ، عَنْ أَبِي صَالِحٍ، وَمُجَاهِدٍ، وَمُسْلِمٍ الْبَطِينِ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ مَا مِنْ أَيَّامٍ الْعَمَلُ الصَّالِحُ فِيهَا أَحَبُّ إِلَى اللَّهِ مِنْ هَذِهِ الأَيَّامِ ‏"‏ ‏.‏ يَعْنِي أَيَّامَ الْعَشْرِ ‏.‏ قَالُوا يَا رَسُولَ اللَّهِ وَلاَ الْجِهَادُ فِي سَبِيلِ اللَّهِ قَالَ ‏"‏ وَلاَ الْجِهَادُ فِي سَبِيلِ اللَّهِ إِلاَّ رَجُلٌ خَرَجَ بِنَفْسِهِ وَمَالِهِ فَلَمْ يَرْجِعْ مِنْ ذَلِكَ بِشَىْءٍ ‏"‏ ‏.‏

Narrated Ibn 'Abbas: The Messenger of Allah (PBUH) as saying: There is no virtue more to the liking of Allah in any day than in these days, that is, the first ten days of Dhu al-Hijjah. They (the Companions) asked: Messenger of Allah, not even the struggle in the path of Allah (Jihad) ? He said: (Yes), not even the struggle in the path of Allah, except a man who goes out (in the path of Allah) with his life and property, and does not return with any of them. Translation Not Available

Book Ref: Sunan Abi Dawud Book 14 Hadith 2438
Web Ref:  Sunan Abi Dawud Book 13 Hadith 2432