Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) narrates: A man came to the service of the Prophet (peace and blessings be upon him) and said: My sister has made a vow that she will go for Hajj on foot. The Prophet (peace and blessings be upon him) said: Tell her to ride and give expiation. (Imam Ibn Hibban, may Allah have mercy on him, says:) There is a possibility that this woman either swore an oath or made a vow to go for Hajj on foot; however, there is no expiation in a vow.