Abu Bakra told that when God’s Messenger heard the people of Persia had made Kisra’s daughter their queen he said, “People who make a woman their ruler will never prosper.”
Narrated Al-Harith al-Ash‘ari reported God's Messenger as saying, “I command you five things:
to maintain the community, to listen, to obey, to emigrate, and to fight in God's path. He who secedes from the community as much as a span has cast off the tie of Islam from his neck unless he returns, and he who summons to what the pre-Islamic people believed belongs to the assemblies of jahannam even if he fasts, prays, and asserts that he is a Muslim.”
Abu Sa'id reported God's Messenger as saying, “No prophet is sent by God and no caliph succeeds another without having two close associates, one who commands and urges him to do what is reputable and one who commands and urges him to do what is evil. The one who is protected is he whom God protects.”