Uthman Banishes Abu Dhar
Uthman banished Abu Dhar to al-Rabatha Desert which is uninhabited because of its bad climate.
Besides Uthman prevented the Muslims from seeing off Abu Dhar. Any how, some Companions of the Prophet went out to see off the great companion Abu-Dhar.
Ali Bin Abu-Talib, our Master Muhammad's grandsons, al-Hasan and al-Husain, and Ammar went out to see off Abu-Dhar.
Then Imam Ali [a] said:
May not Allah amuse those who annoy you. And He may not make safe those who have dismayed you. By Allah, if you want their world, they'll make you safe. And if you are pleased with their actions, they'll love you.
Abu Dhar, his wife, and his daughter went to al-Rabatha Desert. He remembered the tradition of our our Master Muhammad [s]:
Abu-Dhar, you'll live alone, and die alone!
source : sibtayn