Musannaf Ibn Abi Shaybah

Hazrat Ata says that do not let lice infest your head while you are in the state of Ihram, (it is permissible for a Muhrim to scratch his head).

Hazrat Qasim says that a person in the state of Ihram should scratch with the inner part of the fingers.

Ibrahim says that if a person in the state of ihram scratches gently, there is no harm.

Hazrat Abdullah bin Umar (may Allah be pleased with them both) narrates that a person asked me, "Can I scratch my head while in the state of Ihram?" He replied, "Yes, if you wish." The person said, "I scratched my head and a louse fell out. Then I searched for it again but could not find it." He replied, "It is one that runs away, so you will not find it."

A man asked Hazrat Ibn Abbas (may Allah be pleased with them both) while he was in the state of Ihram for Hajj, "Can I scratch my head while in Ihram?" Hazrat Ibn Abbas (may Allah be pleased with them both) joined both his hands together and scratched his head with them and said, "In any case, this is what I say." The man asked, "What if you kill a louse?" He replied, "Distance be upon you! A louse is not an obstacle to scratching my head, and indeed, you people have only been prohibited from hunting during Hajj."

Hazrat Jabir bin Abdullah (may Allah be pleased with him) narrates that a person in the state of Ihram should scratch his head with the inner part of his fingers, and he says that the person who saw Hazrat Umar scratching (his head) informed me.

It was asked from Hazrat Ata whether a person in Ihram can scratch his head. He replied, "Yes, with the tips of his fingers."

Hazrat Ibrahim bin Muhajir was asked whether he had heard from Hazrat Ibrahim that if a person in the state of Ihram scratches his head, there is no harm in it? He replied, yes.

Hazrat Abu Majliz narrates that I saw Hazrat Ibn Umar (may Allah be pleased with them) scratching his head while in the state of Ihram, then I looked closely and saw that he was scratching with his fingers.

Hazrat Ubaid bin Umair says that there is no harm if a Muhrim scratches his head.

Hazrat Ata says that a Muhrim will scratch his head gently.