Vows and Oaths
Malik :: Book 22 : Hadith 22.1.2
Yahya related to me from Malik from
Abdullah ibn Abi Bakr that his paternal aunt related that her grandmother made a vow to walk to the Quba mosque. She died, and did not fulfill it, so Abdullah ibn Abbas asked her daughter to walk for her.
Yahya said that he had heard Malik say, "No one walks for anyone else."