He intended to perform the Adhha sacrifice, then he removed some of his Hair
Question :
What is the ruling on whoever intended to perform the Adhha sacrifice for himself, then he shaved his hair or clipped his nails during the 10 days of the month of Thul- Hijjah unintentionally?
Answer:
It is not permissible for whoever has a sacrificial animal that he has designated for the Adhha sacrifice to remove any of his hair or nails when the month of Thul-Hijjah has begun, until he sacrifices the animal. This is due to what Muslim recorded in his Sahih from Umm Salamah k that she said, "The Messenger of Allâh said:
"Whoever has a sacrificial animal that he wants to slaughter, when the new moon of Thul-Hijjah appears he should not remove any of his hair or his nails until he performs the Adhha sacrifice."
So, if the person opposes this and removes anything from his hair or his nails, he should seek Allâh's forgiveness and he is not required to offer a ransom of atonement, even if he did that intentionally.
May Allah send prayers of blessing and peace upon our Prophet Muhammad, his family and his Companions.
Source:
The Permanent Committee
Fatawa Islamiyah, Vol. 4 Pages 328-329