From Abu Hurairah (radiyallaahu 'anhu) who said that Allaah's Messenger (salallaahu 'alaihi wa'sallam) said:
There will come upon the people years of deceit in which the liar will be believed, the truthful disbelieved, the treacherous will be trusted and the trustworthy held to be treacherous, and the despicable (ar-Ruwaybidah) will speak out. It was said: Who are the despicable ones (ar-Ruwaybidah)? He said: The lowly, ignoble man who speaks out about the public affairs.
[Author's text abridged hereafter]
So it is binding upon the obedient servant that he should: