Is shaving the head obligatory for the one who is prevented from completing Hajj?

Question : Is shaving obligatory for him, or is it not obligatory? This is a person who is prevented (muhasar); is he required to shave his head, or is it not required?

Answer : Some scholars hold that shaving is obligatory for him, while others hold that it is not obligatory. Those who say it is not obligatory cite as evidence that Allah says , and He did not specify shaving, nor did He say "and shave," but rather He said , which indicates that shaving is not obligatory. However, some scholars said that shaving is indeed obligatory because the Prophet (peace and blessings be upon him) ordered his Companions to do so. He ordered them at al-Hudaybiyyah to shave, and he insisted upon it, but they (may Allah be pleased with them) hesitated somewhat, hoping that the ruling might change, not in disobedience to the Messenger (peace and blessings be upon him). Eventually, he went to Umm Salimah (may Allah be pleased with her) and informed her of the situation. She said, "O Messenger of Allah, go out and call the barber to shave your head." So the Prophet (peace and blessings be upon him) went out and called the barber, who shaved his head. The people then followed one after another in shaving, until some of them nearly killed others, because when they saw the Prophet (peace and blessings be upon him) had shaved, they realized that the ruling could not change; the ruling is now established and not subject to abrogation. Initially, they hoped the ruling would be abrogated, lightened, or changed to another ruling, but when they saw the Prophet (peace and blessings be upon him) had shaved, they followed in shaving until some of them nearly killed others. The correct view in this matter is that shaving is obligatory, because the Prophet (peace and blessings be upon him) ordered it and became angry when his Companions delayed in carrying it out. We move on to the verse regarding the sacrifice and approaching [the Ka'bah], which is what we were discussing. I mean, what does "kill with the sword" mean? It means they crowded around those who were shaving until some of them nearly killed others.