وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ عَبْدِ اللَّهِ بْنِ أَبِي بَكْرٍ، عَنْ عَمَّتِهِ، أَنَّهَا حَدَّثَتْهُ عَنْ جَدَّتِهِ، أَنَّهَا كَانَتْ جَعَلَتْ عَلَى نَفْسِهَا مَشْيًا إِلَى مَسْجِدِ قُبَاءٍ فَمَاتَتْ وَلَمْ تَقْضِهِ فَأَفْتَى عَبْدُ اللَّهِ بْنُ عَبَّاسٍ ابْنَتَهَا أَنْ تَمْشِيَ عَنْهَا ‏.‏ قَالَ يَحْيَى وَسَمِعْتُ مَالِكًا يَقُولُ لاَ يَمْشِي أَحَدٌ عَنْ أَحَدٍ ‏.‏

Yahya related to me from Malik from Abdullah 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." Translation Not Available

Book Ref: Muwatta Imam Malik Book 22 Hadith 1013
Web Ref:  Muwatta Imam Malik Book 22 Hadith 2