<aside> 💡 The best answers will be those which deal with the caliphates of all four caliphs.
</aside>
Abu Bakr (ra):
“I have been chosen Caliph, though I am not the best of you. If I prove to be good, support me. But if I do wrong set me right. Truth is honesty; and lying is treachery. The weak among you is strong before the law until he is redeemed from oppression and the strong among you is weak before the law until he abstains from oppression. Obey me as long as I obey Allah and His Messenger and if I disobey Allah and His Messenger, you owe me no obedience.”