Reasons for the battle of Ridda 1. Disruption in the propagation of Islam. 2. Lack of improved communication system. 3. Jealousy of Muslim predominance in Medina. 4. Lack of coherent publicity. 5. The greed of selfish quarters. . Jewish conspiracy. . Conspiracy of Christians. . Deprived of the companionship of the Prophet (peace be upon him). 9. Failure to understand the essence of Islam. 10. Opposition to moral discipline. 11. Refusal to pay Zakat.