The Prophet (saw) said, “No good deeds done on other days are superior to those done on these (first ten days of Dhul-Hijjah).” Then some companions of the Prophet 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.” (Reported by al-Bukhaari Book #15, Hadith #86)