The word Taqwa or piety (to fear Allah and to guard against evil) is frequently used by laymen and experts and recommended by one group or the other. But what does it really mean? Each group has a special meaning of piety in mind. To clarify its meaning, we need to discuss the views of the lexicographers and scholars as well as those of Ahl al-Bayt and some of the mystics. This course examines Taqwa through Fasting.