12. Ali ibn Ibrahim has narrated from his father from Ibn Abi ‘Umayr from Rifa’ah who has said the following: “I once asked abu ‘ Abd Allah عليه السلام, about a man who has made a vow to walk to Bayt Allah al-Haram (the Sacred House of Allah): if it is sufficient for Hajjahta al-Islam. He (the Imam) said, ‘Yes, it is sufficient.’ I then asked, ‘What happens if he performs al-Hajj for others and he does not have any assets and has vowed to perform al-Hajj on foot? Is this kind of al-Hajj sufficient? He (the Imam) said, ‘Yes, it is sufficient.’”