From those who cut some of the hair on their head when exiting the state of ihram from 'Umrah or Hajj, is their action valid?

Question:
May Allah reward you, Honorable Shaykh. This questioner says: We observe many people at al-Marwah cutting their hair with scissors, and they do not shorten the hair over the entire head. Is their action valid? And should we disapprove of those who do that if the action is not valid?

Answer:
Yes, this is not valid and it is not sufficient, because just as shaving is for the entire head, so too is shortening for the entire head. As for the one who cuts some of his hair, it is not said that he shortened his head, but rather that he shortened part of his head. What is required is that he completes the shortening of the hair on his head. They should be pointed out to this matter. Yes.