What is the ruling if residents in a country celebrate Eid al-Adha a day earlier than Saudi Arabia? Is it permissible to fast on that day, considering it to be the Day of Arafah, and is it permissible for us to offer the sacrifice on this day?

If a person arrives in a country, he acts according to the sighting of the crescent moon of Dhul-Hijjah by its people, and he fasts the Day of 'Arafah and offers the sacrifice on the Day of Eid based on the sighting of the country in which he resides. This is in accordance with the saying of the Prophet, peace and blessings be upon him: "Fasting is the day you fast, and breaking the fast is the day you break your fast, and the sacrifice is the day you sacrifice."