In Islamic Friday prayers the law is fard or 'obligatory for every Muslim male. Every Muslim man must do the prayer without exception.

Like other obligatory prayers, every Muslim male must also know the correct Friday prayer procedures, complete from beginning to end.

The fard prayer 'ain law makes every Muslim male who dies Friday prayers for no reason as permitted by shar'i be considered to have committed a grave sin.

Doing the correct Friday prayer must be complete from beginning to end. Including sunnah prayers before and after Friday prayers.

Because of that Friday prayer should not be done in bits and pieces. If doing Friday prayers is not correct and complete, it can reduce the value of the reward.