The Best Days for Performing Good Deeds in Asharah Zul-Hijjah
The Prophet of Rahmah, the Intercessor of Ummah, the Owner of Jannah (May Peace and blessings of Allah be upon him) said: ‘There is no deed, performed any other day, which ALLAH likes more than the deed performed during these ten days.’ The blessed companions asked, ‘Ya Rasulullah (May Peace and blessings of Allah be upon him) not even Jihad?’ He (May Peace and blessings of Allah be upon him) replied, ‘And not even Jihad, except the person who leaves his home with his life and money and does not bring anything back.’ (In other words, only the Mujahid who succeeds in sacrificing his life and money in the path of ALLAH can excel).
(Sahih Bukhari, vol. 1, pp. 333, Hadis 969)