Abdullah bin Amr bin As reported,

We were with the Messenger of Allah ﷺ on a journey, and we stopped at a place to camp. Some of us were fixing their tents, some were practicing archery, and some were tending to their grazing animals when the caller of the Messenger of Allah ﷺ announced, "The prayer is gathering."We assembled before the Messenger of Allah ﷺ, and he said, "There has never been a prophet before me except that it was his duty to guide his community to the best of what he knew for them and to warn them against the worst of what he knew for them. As for this community of yours, its well-being has been placed in its earliest generation, while its later generations will be afflicted with trials and matters you will find detestable. A trial will come, and one part of it will make another seem light. A trial will come, and the believer will say, 'This will be my destruction,' then it will pass. Another trial will come, and the believer will say, 'This one, this one.' So whoever wishes to be removed from the Fire and admitted into Paradise, let his death come while he believes in Allah and the Last Day, and let him treat people the way he loves to be treated. Whoever pledges allegiance to a leader, giving him the clasp of his hand and the fruit of his heart, let him obey him if he is able. If another comes to dispute his authority, then strike the neck of that other one."I drew near to him and said, "I implore you by Allah, did you yourself hear this from the Messenger of Allah ﷺ?"He pointed to his ears and his heart with his hands and said, "My two ears heard it and my heart preserved it."I said to him, "Your cousin Muawiya commands us to consume our wealth among ourselves wrongfully and to kill ourselves, while Allah says, 'You who believe, do not consume one another's wealth wrongfully, but only through trade by mutual consent. And do not kill yourselves. Indeed, Allah is ever Merciful to you.' [Nisa 4:29]"He was silent for a while, then said, "Obey him in obedience to Allah, and disobey him in disobedience to Allah."

عن عبد الله بن عمرو بن العاص قال

كنا مع رسول الله ﷺ في سفر، فنزلنا منزلا، فمنا من يصلح خباءه، ومنا من ينتضل، ومنا من هو في جشره، إذ نادى منادي رسول الله ﷺ: الصلاة جامعة، فاجتمعنا إلى رسول الله ﷺ فقال: إنه لم يكن نبي قبلي إلا كان حقا عليه أن يدل أمته على خير ما يعلمه لهم، وينذرهم شر ما يعلمه لهم، وإن أمتكم هذه جعل عافيتها في أولها، وسيصيب آخرها بلاء وأمور تنكرونها، وتجيء فتنة، فيرقق بعضها بعضها، وتجيء الفتنة، فيقول المؤمن: هذه مهلكتي، ثم تنكشف وتجيء الفتنة، فيقول المؤمن: هذه هذه، فمن أحب أن يزحزح عن النار، ويدخل الجنة، فلتأته منيته وهو يؤمن بالله واليوم الآخر، وليأت إلى الناس الذي يحب أن يؤتى إليه، ومن بايع إماما فأعطاه صفقة يده وثمرة قلبه، فليطعه إن استطاع، فإن جاء آخر ينازعه فاضربوا عنق الآخر. فدنوت منه فقلت: أنشدك الله آنت سمعت هذا من رسول الله ﷺ؟ فأهوى إلى أذنيه وقلبه بيديه، وقال: سمعته أذناي ووعاه قلبي، فقلت له: هذا ابن عمك معاوية يأمرنا أن نأكل أموالنا بيننا بالباطل، ونقتل أنفسنا، والله يقول: {يأيها الذين ءامنوا لا تأكلوا أموالكم بينكم بالباطل إلا أن تكون تجرة عن تراض منكم ولا تقتلوا أنفسكم إن الله كان بكم رحيما} قال: فسكت ساعة، ثم قال: أطعه في طاعة الله، واعصه في معصية الله.