The rule of a Muslim fasting with the people of his land: does it apply to prayer as well?

The questioner : ... .

The Shaykh : As I understood it.

The questioner : Regarding fasting, for example, Muslims in Saudi Arabia fast, while some Muslims in Egypt, Libya, or anywhere else fast, and some do not. We have heard now that Muslims in a country are supposed to fast according to the moon sighting in their own country, even if it is done in a non-Shari'ah manner. So, will prayer also be performed by Muslims in every country according to their local timing?

The Shaykh : This is possible to distinguish easily between prayer and fasting. We mentioned the issue of prayer. For example, can a person pray Fajr in a mosque where the Fajr prayer is performed before its time, then return to his family and pray it within its time, if he has knowledge of what we are discussing with you now? As for fasting, there would be severe, very severe disruption if some people say, "Today is a day of fasting," and others say, "No, there is no fasting today." And when the time to break the fast comes, it is also the time for the festival prayer. Some people will celebrate the festival, and others will not.