We accompanied Messenger of Allah (ﷺ) on a journey. We halted at a place to take a rest. Some of us began to set right their tents, others began to graze their animals while others were engaged in competing with one another in archery when an announcer of Messenger of Allah (ﷺ) announced that people should gather for Salat. We gathered around the Messenger of Allah and he ((ﷺ)) addressed us, saying, "Every Prophet before me was under obligation to guide his followers to what he knew was good for them and to warn the evil thing which he knew. As for this Ummah, it will have sound state and in its early stage of existence; but the last phase of its existence, will be faced with trials and with things you do not recognize. There will be tremendous trials, one after the other, and to each the believer will say, 'That is it'. Whenever a trial arrives the believer will say: 'This is going to bring about my destruction.' When this passes, another calamity will approach and he will say: 'This surely is going to be my end.' Whosoever wishes to be removed from the Fire (Hell) and admitted to Jannah should die with faith in Allah and the Last Day; and he should treat others as he wishes to be treated. He who swears allegiance to an Imam, he should give him the pledge in ratification and the sincerity of his heart. He should obey him to the best of his capacity. If another man comes forward as a claimant (when one has already been installed), behead the second."

[Muslim].