Abu Dawud Book 017, Hadith Number 3409.
Chapter : Not known.
Narated By Ubaydah ibn as-Samit : I taught some persons of the people of Suffah writing and the Qur'an. A man of them presented to me a bow. I said: It cannot be reckoned property; may I shoot with it in Allah's path? I must come to the Apostle of Allah (pbuh) and ask him (about it). So I came to him and said : Apostle of Allah (pbuh), one of those whom I have been teaching writing and the Qur'an has presented me a bow, and as it cannot be reckoned property, may I shoot with it in Allah's path? He said: If you want to have a necklace of fire on you, accept it.