Sahih Muslim Book 32, Hadith Number 6334.

Chapter : He who goes in the mosque or in the bazaar or a place of gathering like it with a weapon should see that the spearhead does not harm anyone.

Abd Musa reported that Allah’s Messenger (may peace be upon him) said: When any one of you happens to go to a meeting or the bazar with an arrow in his hand he must grasp its pointed head; then (he again said): He must grasp its pointed head. Abu Musa said: By Allah, we did not court death until some of us had flung arrows upon the faces of one another.