- 4 months are sacred out of 12 months in the lunar calendar
- An overview on Hajj which is decreed in the Sacred Months
- Hajj in a right way and distortions around that we may avoid
- Review of certain verses of Quran in connection with Hajj
- The animal sacrifice is a rite for pilgrims not for non-pilgrims
- The animal sacrifice is a ritual for pilgrims who can afford it
- The commandment of Hajj and mathematical confirmation
- The Four Sacred Months and its mathematical confirmation
- War rules during the Hajj time and outside of the Hajj time
