Following and being obedient to the Holy Prophet Muhammad(sa) is essential for the success of every Muslim. The Holy Prophet(sa) would himself offer and instruct his companions to read certain Sunnah prayers before or after some Salat. For example, two Sunnah prayers before Fajr or two Sunnah prayers after Maghrib, etc. If someone goes against the instructions of the Holy Prophet(sa), they are condemning themselves to failure. Therefore the Sunnah prayers are of utmost importance and every Muslim should offer them according to the instructions and practice of the Holy Prophet(sa).