Abu Dawud Book 23, Hadith Number 3905.
Chapter : Taking omens.
Narated By N/A : Muhammad b. al-Musaffa said to us on the authority of Baqiyyah. He said: I asked Muhammad b. Rashid about the meaning of the word hamah. He replied: The pre-Islamic Arabs used to say: When anyone dies and is buried, a bird canles forth from his grave. I asked: What did he mean by safar? He said: I heard that the pre-Islamic Arabs used to take evil omen from safar. So the Prophet (may peace be upon him) said : There is no safar. Muhammad (b. Rashid) said : We heard someone say: It is a pain in the stomach. They said that it was infection. Hence he said : There is no safar.