Sahih Bukhari
The Two Festivals (Eids)
Volume: 002 / Book Number: 015 / Hadith Number: 84
Narrated Said bin 'Amr bin Said bin Al-'Aas:
Al-Hajjaj went to Ibn Umar while I was present there. Al-Hajjaj asked Ibn Umar, "How are you?" Ibn Umar replied, "I am all right," Al-Hajjaj asked, "Who wounded you?" Ibn Umar replied, "The person who allowed arms to be carried on the day on which it was forbidden to carry them (he meant Al-Hajjaj)"