What is the ruling on one who shortens only part of the hair on his head during 'Umrah?

The questioner : This questioner says: What is the opinion of the Honorable Shaykh regarding a person who performed the rituals of 'Umrah, but when it came to shortening the hair, he only took a little hair from the right side, the front, and the left side of the head, and did not shorten the hair completely?

The Shaykh : My opinion in this matter is that his shortening was not completed, and that it is obligatory for him now to take off his clothes, put on the clothes of ihram, and shorten the hair properly, and then after that he exits the state of ihram. And on this occasion, I would like to point out that it is obligatory for every believer who wants to worship Allah with a form of worship to know in it, so that he worships Allah with knowledge, not with ignorance. Allah the Exalted said about His Prophet Muhammad (peace and blessings be upon him) If a man wanted to travel from Makkah to Madinah, and there were no paved roads there, would he go out from Makkah to Madinah without asking about the road, or not? He would not go out until he asks about the road. If this is the case with physical roads, why is it not the case with the spiritual roads, which are the roads leading to Allah? You intend to worship Allah the Mighty and Majestic with a form of worship, and you do not know its boundaries? This is a great error. Yes.

The questioner : Exactly.

Another questioner : And what is the solution for the one who has already done it, O Shaykh?

The Shaykh : Yes. Yes. But what is it, exactly? Hmm? This brother made a comment that I saw fit to accept, even though it was an oral question. He asks: What is shortening the hair? What is the detail? Do you know the detail? The intention is to cut the hair without shaving it. Shaving is done with a razor, and shortening is done with scissors or with the machines that take hair. Therefore, the best thing in shortening the hair is for a person to use the machine, because the machine covers the entire head. And although it is permissible to shorten with scissors, it is on the condition that he passes over the entire head, just as in wudu' he passes over the entire head, so likewise in shortening the hair. Yes, indeed.