Full answer (his modus operandi)
Now we come to the last question which is about the method that the Mahdi is likely to adopt to achieve his objective, the final victory of justice and the complete eradication of injustice.
A definite answer to this question depends not only on the knowledge of the timing and the stage at which the Mahdi will reappear but also on the possibility of imagining what particular circumstances will be prevailing at that time. It is only in light of these circumstances that a picture of his possible strategy can be drawn.
So long as we do not know at what stage the Mahdi will reappear and what will be the prevailing circumstances at that time, it is not possible to make any prediction along scientific lines. Any presumptions made in this connection will be based mostly on fiction and not on facts. Anyhow, there is one basic presumption that can be accepted in the light of the traditions and the historical experience of the great changes.
This much can in any case be predicted safely that the Awaited Saviour - will appear when the stage for his appearance is set, neither earlier nor later. Let us be clear as to the meaning - of this stage for his appearance. This stage means the conditions prevailing in the world and in human society. It means the decline in man's moral life, when oppression and tyranny will be rampant, and when mankind will have fallen into the abyss of crime and immorality.
In addition, this stage for his appearance means that the conditions then prevailing would create the necessary psychological atmosphere for the reception of a savior. Mankind would be dead tired and fed up with the shape of things and would quite naturally look forward to a savior for its liberation. This will happen when wickedness will reach its climax. There will be great upheaval, a great conflagration, that will send this universe to its doom. In the darkness that will then prevail, there will dawn a new Sun in the form of the Mahdi, spreading light and luster. Having liberated mankind from its misery and curse, the Mahdi will then bring about a transformation of life in which justice, peace, virtue, and righteousness will abound. Thus will the Awaited Imam accomplish his mission.
Certain Islamic traditions speak of a government of the virtuous which is to continue until the appearance of the Mahdi (May Allah hasten his advent) and, as we know, some Shi'ah scholars who held a high opinion about a certain number of their contemporary rulers have hinted at the possibility of the continuance of their dynasties until the appearance of the Mahdi.
On the whole, it is derived from the Qur'anic verses and the Islamic traditions that the rising of the Mahdi will be the last in the series of fights between the good and the evil which have continued from the very inception of the world. It will be the Mahdi who will give a concrete shape to the ideal of all the Prophets, the saints, and the fighters in the way of Allah.”
During the period of the occultation, it is our duty to be expecting the Awaited Imam. We must devise a sound and judicious system of social development based on the holy Qur'an and present it to the world. We must prove the excellence and efficacy of Divine laws to the people and attract their attention to the Divine system we must fight superstitions and false beliefs and pave the way for the establishment of an Islamic world government. In the light of the teachings of the holy Qur'an and traditions of the holy Prophet, we must chalk out a programme for solving the world problems and put it at the disposal of world reformers. We must enlighten the thoughts of the people of the world and at the same time, prepare ourselves to receive the Awaited Imam and the emergence of a just world government.