Atiyyah said: I asked a freed slave of Ibn Umar (may Allah be pleased with them both): How did Ibn Umar (may Allah be pleased with them both) die? He said: "The spear of a man from the people of Syria wounded him in his leg. Then al-Hajjaj came to visit him in his illness and said: If I knew who wounded you, I would strike off his neck. He said: It was you who wounded me. He asked: How? He said: On the day you brought weapons into the Sanctuary of Allah."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 12983