Yahya related to me from Malik fromAbdullah ibn AbiBakr that his paternal aunt related that her grandmother made a vow towalk to the Quba mosque. She died, and did not fulfill it, so Abdullahibn Abbas asked her daughter to walk for her.Yahya said thathe had heard Malik say, "No one walks for anyone else."
USC-MSA web (English) reference: Book 22, Hadith 2
Arabic reference: Book 22, Hadith 1013