Mukhtasar Bukhari

Narrated by Sayyiduna Ibn Abbas (may Allah be pleased with them both) from the Noble Prophet (peace and blessings be upon him) that he said: "There are no days in which righteous deeds are more beloved to Allah than these ten days." The companions asked, "Not even Jihad?" He (peace and blessings be upon him) said: "Not even Jihad, except for a man who goes out for Jihad with his life and wealth and returns with nothing."