<b>Guidance from the Hadiths:</b><br> 1) It is prohibited to single out Friday alone for fasting. But it is permissible to fast it along with a day before or a day after.<br> 2) It is not permissible to single out the night of Friday for performing voluntary night prayer, as linking any act of worship to a particular time requires a Shariah proof.<br> Note:<br> He who performs the voluntary night prayer on a regular basis is not subject to this prohibition. It is permissible for him to perform it on Friday night, for he does not single it out for this worship, and Allah knows best.