What do the scholars and experts of shari’ah say regarding the ruling on cutting hair, nails, etc. after the sighting of the moon of Dhul-Hijjah for the person on whom the sacrifice is obligatory? And if a person cuts his nails, will he be a sinner?
It is mustahabb for the one giving a sacrifice not to cut his nails and hair from the 1st of Dhull-Hijjah until the sacrificial animal is slaughtered.
“Mustahab” means that if it is done, it is rewarded and if it is not done, there is no sin on it, so if a person cuts his hair or nails during these days, there is no blame on him and he will not be sinful.
On the authority of Umm Salamah, may God be pleased with her, who raised him, the Prophet ﷺ said: If the ten days begin and he has a sacrifice and he wants to sacrifice, then he should not remove anything from his hair or skin. (Sahih Muslim)
And Allah ﷻ knows the best
This fatwa is written by Dr. Hafiz Muhammad Munir Al-Azhari