Narrated Sa`id bin Jubair
I was with Ibn `Umar when a spear head pierced the sole of his foot and his foot stuck to the paddle of the saddle and I got down and pulled his foot out, and that happened in Mina. Al-Hajjaj got the news and came to inquire about his health and said, "Alas! If we could only know the man who wounded you!" Ibn `Umar said, "You are the one who wounded me." Al-Hajjaj said, "How is that?" Ibn `Umar said, "You have allowed the arms to be carried on a day on which nobody used to carry them and you allowed arms to be carried in the Haram even though it was not allowed before."
Narrated Sa`id bin `Amr bin Sa`id 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)."