[22].Surah Al-Hajj [The Pilgrimage]: Ayat 10-11

Ayat 10. That is because of what your hands have sent forth, and verily, Allah is not unjust to (His) slaves.

Ayat 11. And among mankind is he who worships Allah as it were, upon the very edge (i.e. in doubt); if good befalls him, he is content therewith; but if a trial befalls him, he turns back on his face (i.e. reverts back to disbelief after embracing Islam). He loses both this world and the Hereafter. That is the evident loss.

[Tafseer] (It will be said): "This is because of the deeds which  thy hands sent forth, for verily Allah is not unjust to His servants. 'What you suffer is the consequence of your own sinful deeds; Allah is just; He is not unjust in the least to any of His creatures'. There are among men some who serve Allah, as it were, on the verge: if good befalls them, they are, therewith, well content; but if a trial comes to them, they turn on their faces: they lose both this world and the Hereafter: that is loss for all to see! They are men whose minds are not firm: they will have faith, if all goes well with them, but as soon as they are tried, they are found wanting. They differ from hypocrites. It is not fraud or double dealing that is their sin: it is a weak mind, petty standards of judging right by success, a selfishness that gives nothing but asks for all, a narrow-mindedness that does not go beyond petty mundane calculations "nicely calculated less or more" of the good things of this world. They fail in both worlds and their failure in this world is patent for every on-looker. 

Anas (May Allah bepleased with him) reported: Messenger of Allah [SAWW](PBUH) said, "Help your brother, whether he is an oppressor or is oppressed". A man enquired: "O Messenger of Allah! I help him when he is oppressed, but how can I help him when he is an oppressor?'' He [SAWW](PBUH) said, "You can keep him from committing oppression. That will be your help to him".

[Al-Bukhari Volume 3, Book 43, Hadith Number 624].

Lesson : as mentioned above in Surah Al-Hajj Ayat 10."That is because of what your hands have sent forth" This Hadith contains a very comprehensive injunction to eliminate disturbance and tyranny in the Muslim society. It not only ordains helping the oppressed but also encourages people endowed with moral courage to stop the oppressor's oppression. Doing so requires great courage and boldness, but Muslims would be able to do full justice to their duty of wishing well to their fellow Muslims when they develop the moral courage to stop the oppressor from tyranny, or at least protest against it verbally.