How to Cut The Hair During Hajj?

During Hajj, we see some people (males) cutting short their hair just from the bottom and around their heads only leaving the rest of the head untouched. They don't cut any of the hair from there. When we told them that cutting the hair should be done equally all over the head, they said that this is what is required. So, which of the two actions is obligatory?

That which is obligatory is for the head to either be shaved or hair cut equally from all over the head during Hajj and Umrah. It is not required to take from every single hair.

That which has been mentioned in the question is not sufficient according to the correct opinions of the People of Knowledge and nor is it from the Sunnah of Muhammad (Peace and blessings be upon him).

And with Allah lies all success and may Allah send prayers and salutations upon our Prophet (Peace and blessings be upon him) and his family and his companions.

The Permanent Committee for Islamic Research and Fatawa