The stage by stage reopening of mosques, suraus and religious halls is meant to find out if any other situation arises during the two weeks period.
The Minister of Religious Affairs said the fourteen days is the period to find out if there is any new infection. A day or two would probably be not enough but in the 2-weeks period, it is possible to detect if there is any spread of the disease or not. After that, phase two and the rest can start. Therefore, the 2-weeks is an incubation period.
Source: Radio Television Brunei