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."
English reference: Vol. 1, Book 7, Hadith 1727
Arabic reference: Book 7, Hadith 1799