Sa'id bin Jubayr (may Allah have mercy on him) said: I was with Ibn Umar (may Allah be pleased with them both) when the point of a spear struck the sole of his foot, and the sole of his foot became stuck to the stirrup, so he dismounted and pulled it out. This happened at Mina. When this news reached al-Hajjaj, he came to visit him and said: If only we knew who struck you! Ibn Umar (may Allah be pleased with them both) said: It is you who struck me. He said: How? He said: You carried weapons on a day on which they were not carried, and you brought weapons into the Haram, whereas weapons were not brought into the Haram. [Sahih. Bukhari 923]
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 9698