Malik was asked about the meaning of his saying: There is no safar. He replied: The people of pre-Islamic Arabia used to make the month of safar lawful (for war). They made it lawful in one year and unlawful in another year. The Prophet (ﷺ) said: There is no safar.
Sunan Abi Dawud Book 30, Hadith 11
← Previous Hadith The Prophet (ﷺ) said: There is no ghoul.

Sunan Abi Dawud Book 30, Hadith 10 Next Hadith → 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 comes 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 (ﷺ) 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.

Sunan Abi Dawud Book 30, Hadith 12