b. The Communal Obligation (Fard Kifayah): This is an obligation. If some perform it, then others would be relieved from it. Examples are: the congregational prayer (Jama^ah), memorizing the entire book of the Qur’an, and working in the beneficial handiwork that the Muslims need.

2. The Recommended (Mandub): The one who performs this category earns reward, but the one who leaves it out does not deserve punishment. Examples are: the recommended (sunnah) prayers, and using the siwak.

3. The Prohibited (Haram): The one who leaves this out because he is following the orders of Allah earns reward, and the one who performs it deserves punishment. Examples are: drinking alcohol, taking interest, lying, stealing, harming one's parents, and smoking cigarettes when harmful to one's health.