Sunan Abi Dawud 3315

A similar tradition has also been transmitted in brief by Maimunah daughter of Kardam son of Sufyan on the authority of her father through a different chain of narrators. This version adds:(The Prophet asked): Does it contain an idol or was a festival of pre-Islamic times celebrated there ? He replied: No. I said: This mother of mine has taken a vow and walking (is binding on her). May I fulfill it on her behalf ? Sometimes the narrator Bashshar said: May we fulfill in on her behalf ? He said: Yes