It was asked from Hazrat Ibn Umar (may Allah be pleased with them), a person says, "It is obligatory upon me to walk towards the Ka'bah." He replied, "This is a vow; he should walk on foot."

Hazrat Muhammad bin Hilal says that I heard Hazrat Saeed bin Al-Musayyib say: Whoever says, "It is upon me to walk towards the House of Allah (Baitullah) on foot," this means nothing until he says, "It is my vow that I will walk towards the Ka'bah on foot."

Hazrat Hisham bin Urwah narrates that one of us said, "I have vowed to walk towards the House of Allah (Baitullah) for something." Then he came to Hazrat Qasim and asked him about it. He replied: He should go to the House of Allah on foot.

Hazrat Yazid Abi Ibrahim Al-Taimi says that when a person says, "It is upon me for Allah," or "Hajj is obligatory upon me," then both are equal. And when he says, "I have made a vow," or "It is upon me for Allah," then both are equal.

Hazrat Umar bin Zaid narrates that two persons came to Hazrat Qasim and asked a question. I was listening at that time when one person said, "I have to walk to the House of Allah (Baitullah)." He (Qasim) inquired, "Did he make a vow (nazr)?" They replied, "No." He said, "Then he should give the expiation (kaffarah) for his oath."