It is narrated from Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) addressed us in a sermon and said: "Beware of injustice, for injustice will be darkness on the Day of Resurrection. Beware of obscenity and foul speech. And beware of greed and miserliness, for those before you were destroyed only because of greed and miserliness: it commanded them to sever ties of kinship, so they severed them; it commanded them to be miserly, so they were miserly; and it commanded them to sin, so they fell into sin." Then a man stood up and said: O Messenger of Allah, which Islam is best? He (peace and blessings be upon him) said: "That the (other) Muslims are safe from your tongue and your hand." Then that man, or someone else, said: O Messenger of Allah, which emigration (hijrah) is best? He (peace and blessings be upon him) said: "That you abandon what your Lord dislikes." He (peace and blessings be upon him) (further) said: "Emigration is of two kinds: the emigration of the town-dweller (the settled person) and the emigration of the desert-dweller (the Bedouin). The emigration of the desert-dweller is that he responds when he is called (to jihad) and obeys when he is commanded; and the emigration of the town-dweller is the greater of the two in trial and the more excellent of the two in reward." Both of them (Imam Bukhari and Muslim) narrated the hadith of al-Sha'bi from Abdullah bin Amr in brief, but they did not narrate this hadith, although both of them are agreed on Amr bin Murrah and Abdullah bin al-Harith al-Najrani; and Abu Kathir Zuhayr bin al-Aqmar al-Zubaydi heard from Sayyiduna Ali and Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with them both) and the Companions after them. This very hadith is also found with Imam al-A'mash through Amr bin Murrah.