This book contains masnun duas or the duas which were taught by the Prophet Muhammad. Dua is a noble form of dhikr or remembrance of Allah. By learning these daus and reciting them at the appropriate occasions, our every action is turned into ibadah. Our sleeping, eating, drinking, dressing, etc., all assume the form of ibadah. Constant and conscious recital of the various duas at their appropriate time fixes the remembrance of Allah in the hearts. These duas of the Prophet draw the faithful closer to his Creator. Therefore, it is of absolute necessity that all Muslims learn and recite the various duas. Felicity and success will be the result, insha Allah.