The ruling on the 'Id sacrifice when the sighting of the crescent moon differs between two countries

Question:
Honorable Shaykh, what is the ruling if a man bequeaths to his family that they perform the sacrifice on his behalf, and he travels outside the Kingdom? Then, on the day of 'Id al-Adha in the Kingdom, he is in another city where it is the Day of 'Arafah, and they have not yet sacrificed. Does he sacrifice on his behalf while he is on the Day of 'Arafah, and his family is on the Day of Sacrifice?

Answer:
The ruling on the 'Id sacrifice is the ruling of the place where it is performed. If it is the day of 'Id al-Adha in the country where the agent is, the agent slaughters it on the day of 'Id al-Adha in that country, even if the moon sighting is different in another country. The ruling follows the country where the agent is, so he slaughters the sacrifice on the day of the festival in that country. If it is in the other country, it is considered not to be the day of the festival.
(peace and blessings be upon him) said: "The 'Id is the day you sacrifice." Therefore, it is not permissible for a person to deviate from the Muslims in the country and say, "Today is not the day of the festival, and I am not sacrificing, because I did not see the crescent moon, or I have doubt about the crescent moon," as some ignorant people or those who want to cause confusion among the people say. The ruling of the people of the country is that the 'Id is the day you sacrifice, and deviation is not permissible. It is not permissible to differ in this matter; the Muslims are one community, and this kind of deviation is not permissible.