A man performing Hajj or Umrah: whether trimming suffices

It is narrated from Sayyiduna Jubayr bin Mut'im (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) stood on al-Marwah. In his (peace and blessings be upon him) blessed hand was an arrowhead (mishqas), with which he cut his hair a little, and he (peace and blessings be upon him) was saying: "Umrah has entered into Hajj until the Day of Resurrection. There is no sarurah (a person who stays unmarried, or one who has never performed Hajj) in Islam. Shed the blood of the camels abundantly when sacrificing, and raise your voices loudly with the takbir."

Ata said: The Companions (may Allah be pleased with them) came out of ihram by having their hair shortened, and they did not have their heads shaved.

Hisham said: I performed Hajj and Umrah with my respected father. My hair reached my shoulders. I cut my hair a little, and he never ordered me to have it shaved.

Ibrahim said: When a person performs his first Hajj, he should have his hair shaved. Then, if he performs Hajj a second time, he may shave or shorten as he wishes, but shaving is better. If a person performs Umrah without ever having performed Hajj, he may shave if he wishes or shorten if he wishes. And if he performs tamattu', he should have his hair shortened and then shaved.

Ata was asked whether a person performing his first Hajj should have his head shaved or his hair shortened. He said: It is up to him; he may shave if he wishes or shorten if he wishes.

Al-Hasan said about a person who has never performed Hajj before: If he wishes he may have his head shaved, and if he wishes he may have his hair shortened.

Muhammad said: Alqamah and al-Aswad performed Hajj, or one of them performed Hajj and the other Umrah, and one of them had his head shaved while the other had his hair shortened.

Ibrahim said: They used to like having the head shaved in the first Hajj and the first Umrah.