Sayyiduna Ibn Abbas (may Allah be pleased with them both) narrates that the Messenger of Allah (peace and blessings be upon him) said: "The deeds performed during the ten days of Dhul-Hijjah are more beloved to Allah than the deeds performed on any other days." The companions asked, "Not even striving in the way of Allah?" He (peace and blessings be upon him) replied: "Not even striving in the way of Allah (is more beloved than the righteous deeds of these days), except for a person who goes out with his life and wealth in the way of Allah and returns with neither of them." This narration is from Abu Muawiyah.