The ruling on shaving or shortening the entire head for a person in ihram

Question : Yes. According to this view, everything is permissible for him except intercourse in the private parts. And if we say it is a ritual act, then he must shave or shorten the hair on his entire head, based on the statement: and the fact that the Prophet (peace and blessings be upon him) shaved his entire head. According to this view, shortening part of it is sufficient, like wiping, and he shortens it by the length of a finger joint, because Ibn 'Umar said so. And if he takes less than that, it is permissible, because the command regarding it is general, and a specific limit is not established.

Answer : This is a matter of scholarly disagreement: Is it obligatory in shortening that it cover the entire head? We say that covering every hair is not required, because that is not achieved except by shaving. However, covering the visible part of the head such that the effect of the shortening is apparent, that is what is obligatory. And shortening a few hairs from one side or from the four sides is not sufficient. Yes.