In The Name Of Allah Most Gracious Most Merciful
Assalaamu alaykum wa rahmatuallahi wa barakatuhu

The nation of 'Arabs, will remain prosperous as long as you choose and appoint another chief whenever a former one is dead.
 

Sahih Al-Bukhari HadithHadith 5.645 Narrated byJarir
While I was at Yemen, I met two men from Yemen called Dhu Kala and Dhu Amr, and I started telling them about Allah's Apostle. Dhu Amr said to me, "If what you are saying about your friend (i.e. the Prophet) is true, then he has died three days ago." Then both of them accompanied me to Medina, and when we had covered some distance on the way to Medina, we saw some riders coming from Medina. We asked them and they said, "Allah's Apostle has died and Abu Bakr has been appointed as the Caliph and the people are in a good state.' Then they said, "Tell your friend (Abu Bakr) that we have come (to visit him), and if Allah will, we will come again." So they both returned to Yemen. When I told Abu Bakr their statement, he said to me, "I wish you had brought them (to me)." Afterwards I met Dhu Amr, and he said to me, "O Jarir! You have done a favor to me and I am going to tell you something, i.e. you, the nation of 'Arabs, will remain prosperous as long as you choose and appoint another chief whenever a former one is dead. But if authority is obtained by the power of the sword, then the rulers will become kings who will get angry, as kings get angry, and will be delighted as kings get delighted."

Sahih Muslim HadithHadith 6963 Narrated byAbuSa'id al-Khudri
Allah's Apostle (peace be upon him) said: There would be amongst your caliphs a caliph who would give handfuls of wealth to the people but would not count it.
 

Allah Knows Best