The Ruling on Praying Before the Time Enters

Question:
A group prayed some of the obligatory prayers before the time entered, and they are certain that, according to the calendar, they prayed a few minutes before the prayer time?

Answer:
Answer: Yes, if they are certain that they prayed before the time entered, they must repeat the prayer, for Allah does not accept prayer except in its prescribed times. {Indeed, prayer has been decreed upon the believers at specified times}. It is not permissible to pray before the time except in the case of combining prayers. If one combines the second prayer with the first by advancing them, there is no harm in that, because the time for the two prayers becomes one time in the case of lawful combining. As for praying before the time enters, whether one knows this from the official timing in the Umm al-Qura calendar or from trustworthy people who informed him that his prayer was not in its time, he must repeat the prayer because it is invalid.