Abdullah bin Abbas reported,

The Prophet ﷺ said, "No deeds done during any other days are better than those done during these ten days."The companions asked, "Not even jihad?"He replied, "Not even jihad, except for a man who goes out risking his life and his wealth, and returns with nothing."

Azami 12788

Sahih

عن ابن عباس

عن النبي ﷺ أنه قال: ما العمل في أيام العشر أفضل من العمل فى هذه قالوا: ولا الجهاد؟ قال: ولا الجهاد، إلا رجل خرج يخاطر بنفسه وماله، فلم يرجع بشيء.

الأعظمي 12788صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Tafsir of the great Quran
Chapter
Tafsir of Surah Anbiya
Section
His saying, "That they may witness benefits for themselves and mention the name of Allah on known days over what He has provided for them of livestock. So eat of them and feed the miserable poor." And His saying, "And mention the name of Allah on known days," the known days are the ten days of Dhul-Hijjah. This was said by Ibn Abbas and others
Numbering
Jami al-Kamil 12788 (2nd edition)
Azami 12788