Reported by Ibn ‘Abbas that the Messenger of Allah ﷺ said,

“There are no days during which righteous deeds are more beloved to Allah than these days.” Some people then asked, “O Messenger of Allah, not even fighting in the cause of Allah?” He said: “Not even fighting in the cause of Allah unless a man goes out with himself and his wealth and comes back with nothing.”

Sunnan Ibn Majah, Hadith #1727