Ikrimah (may Allah have mercy on him) narrates from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that the sister of Uqbah bin Amir (may Allah be pleased with him) vowed to perform Hajj on foot, and the Prophet (peace and blessings be upon him) said: "Allah has no need of her vow; tell her to ride."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النذور / 20116