Abu Basir asked Imām Ja'far al-Sādiq (alayhi salām), the meaning of the following verse :
"Allah has promised to those of you who believe and do good that He will most certainly make them rulers in the earth as He made rulers those before them and that He will most certainly establish for them their religion which He has chosen for them and that He will most certainly, after their fear, give them security in exchange, (as) they serve Me (and) do not associate aught with Me..." [Nur : 55]
Imām Ja'far ibn Muhammad al-Sādiq (alayhi salām) replied,
"This verse is revealed in connection with al'Qaem (alayhi salām) and his companions".
[Reference: Al-Ghaybah, p. 126]
The above Quranic verse about the reappearance and uprising of Imam Mahdi (alayhi salām)- the belief common to Ahle-Sunnat too - mentions four characteristics and aims of the universal rule of Hazrat Mahdi (alayhi salām)
1 The establishment of a Universal Government.
2 Absolute Power to the religion of Islam.
3 The atmosphere of complete security and peace.
4 The annihilation of polytheism (Shirk).