Abdullah bin Amr bin As reported,

The Messenger of Allah ﷺ said, "Beware of injustice, for injustice will be layers of darkness on the Day of Resurrection. Beware of obscenity, for Allah loves neither obscenity nor vulgar speech. Beware of stinginess, for stinginess destroyed those who came before you. It commanded them to sever ties, so they cut off their relatives. It commanded them to commit immorality, so they committed it. It commanded them to be miserly, so they were miserly."A man asked, "Messenger of Allah, which form of Islam is best?"He replied, "That the Muslims are safe from your tongue and your hand."The man asked, "Messenger of Allah, which migration is best?"He answered, "That you abandon what your Lord dislikes."The Messenger of Allah ﷺ also said, "Migration is of two kinds, the migration of the settled dweller and the migration of the bedouin. As for the bedouin, he responds when called and obeys when commanded. As for the settled dweller, his trial is the greater of the two, and his reward is the greater of the two."

عن عبد الله بن عمرو

أن رسول الله ﷺ قال: إياكم والظلم؛ فإن الظلم ظلمات يوم القيامة. وإياكم والفحش؛ فإن الله لا يحب الفحش ولا التفحش وإياكم والشح؛ فإنما أهلك من كان قبلكم الشح، أمرهم بالقطيعة، فقطعوا أرحامهم، وأمرهم بالفجور ففجروا، وأمرهم بالبخل فبخلوا. فقال رجل: يا رسول الله، وأي الإسلام أفضل؟ قال: أن يسلم المسلمون من لسانك ويدك. قال يا رسول الله: فأي الهجرة أفضل؟ قال: أن تهجر ما كره ربك. قال: وقال رسول الله ﷺ: الهجرة هجرتان: هجرة الحاضر، وهجرة البادي، أما البادي فيجيب إذا دعي، ويطيع إذا أمر. وأما الحاضر فهو أعظمهما بلية، وأعظمهما أجرا.