question #3 Sahih al-Bukhari 966, Book 13, Hadith 15 : What can be learned about the historical context of carrying weapons during Hajj from this incident?

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.”