OBLIGATORY DAILY PRAYERS
It is obligatory to perform the following five prayers during day and night: Midday (Zuhr) and afternoon prayers ('Asr) - each one consisting of 4 units (Rak'at). Dusk prayers (maghrib) - 3 units. Night prayers (Isha) - 4 units. Dawn prayers (Fajr) - 2 units.
Useful information: While travelling the traveller should reduce the prayers of 4 units to 2 units. The conditions under which the units are shortened will be mentioned later.