Among the majority Islamic legal opinions that hold niqab is not obligatory, there is dispute among Islamic schools of thought and scholar whether or not wearing niqab to cover the face at any time (not just during Hajj and Umrah) is 'urf (a cultural practice) which should be discouraged or if it is bid'ah say'iah (an innovation which opposes the Qur’an and Sunnah) and therefore against Islam which should be prohibited.