It wasnarrated from Ibn 'Abbas that the Messenger of Allah (ﷺ)said:
"There are no days during which righteous deeds are more belovedtoAllah than these days," meaning the (first) ten days ofDhul-Hijjah. They said: "O Messenger of Allah! Not even Jihad inthe causeof Allah?" He said: "Not even Jihad in the cause ofAllah, unless aman goes out with himself and his wealth and does notbring anythingback." (FR)
English reference (FR): Vol. 1, Book 7, Hadith 1727 (FR)
Arabic reference (FR): Book 7, Hadith 1799 (FR)