Abu 'Ubaidah bin Al Jarrah رضى الله عنه

The Prophet صلى الله عليه وسلم publicly named 10 men who he himself guaranteed would be in Paradise in the Hereafter. One of thrse men was Abu Ubaidah Bin Al Jarrah رضي الله عنه. He was one of amongst who accept Islam in its early days in Makkah. He took part in the migrations to Ethiopia and Al Madinah, for the sake of preserving his faith. He fought in all the major battles of Islām and spent most of his life as a soldier fighting for the cause of Islām. He even killed his own father in battle when his father vowed to slay him for accpeting Islām. Praising his character, the Prophet صلى الله عليه وسلم said: 

"Every Ummah has a trustworthy man; Abu Ubaidah is the trustworthy man of this Ummah,"