It is narrated from Hazrat Abu Saeed Khudri (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: Soon there will be rulers over you with whom hearts will be content and bodies will be gentle towards them. After that, there will be rulers with whom hearts will be uneasy and bodies will tremble. A man asked, "O Messenger of Allah! Should we not fight against such rulers?" The Prophet (peace and blessings be upon him) said, "No, as long as they establish prayer."