ABU 'UBAIDAH IBN AL-JARRAH (MAY ALLAH BE PLEASED WITH HIM)
Abu'Ubaidah ibn al-Jarra, was one of the ten companions of the Prophet Muhammad صلى الله عليه وسلم who were promised Paradise. He remained commander of a large section of Muslim armies during the time of Caliph 'Umar ibn al-Khattab and was on the list of 'Umar’s appointed successors to the Caliphate. The Brotherhood was made between him and Sa'd bin Mua'dh (or some say Salim Client of Abu Hudhayfa).
The Prophet (s) publicly named ten men who would be guaranteed Paradise in the Hereafter. One of these fortunate men was Abu ‘Ubaidah bin Al-Jarrah. He was one of the earliest to accept Islam in its early days in Mecca. He took part in the migrations to Ethiopia and Medina for the sake of preserving his faith. He fought in all the major battles of Islam and spent most of his life as a soldier for Allah’s cause. He even killed his own father in battle when his father vowed to slay him for accepting Islam. Aamir ibn Al-Jarraah was also called Al-Qawiyy Al-Ameen (the strong, the trustworthy). 
Narrated upon the authority of Anas ibn Maalik (May Allah be pleased with him) who said that the Messenger of Allah صلى الله عليه وسلم said: Praising his character, the Prophet (saas) said: “Every Ummah has a trustworthy man; Abu ‘Ubaidah is the trustworthy man of this Ummah“.
In another hadith narrated upon the authority of Hudhaifah ibn Al-Yamaan (May Allah be pleased with him) who said: "The people of Najran came to the Messenger of Allah peace be upon him and said: 'O Messenger of Allah send to us a trustworthy man (to teach us the affairs of our religion). He (The Messenger of Allah صلى الله عليه وسلم) said: 'I will send you the most trustworthy man.' All of the people were looking forward (to be that person). He then sent Abu 'Ubaidah ibn Al-Jarraah".
'Amir ibn 'Abdullah ibn al-Jarrah b. Hilal b. Uhaib b. Dabbah b. Al-Harith b. Fihr b. Malik
'Abdullah ibn al-Jarrah / Umm Ghanm bint Jabir bin 'Abdul-'Uzza
Yazid ibn 'Abdullah ibn al-Jarrah
40 BH/584 CE (Makkah)
18 AH/640 CE ('Amawas, Palestine)[ Natural
Recitation/Quran, Commander, Narrator [ ? - ????? ]
Hind bint Jabar, Warja
Yazid and 'Ubaidah, 'Umair
Jabir ibn 'Abdullah, Samra bin Jundub, 'Abdur Rahman bin Ghnm, Abu Umama al-Bahili, 'Arbad bin Sariyya al-Salmi, Abu Tha'laba al-Khushni, Abu Muslim al-Khulani, Aslam Client Of 'Umar, Qays bin Abi Hazim, 'Abdullah bin Saraqa al-Azdi, Nashrah bin Sami al-Yazni
Sahih Bukhari: 1 Sahih Muslim: 5 
Books of al-Isabah[3/587,588,589,590] , al-Isabah[7/269] , Tarikh-ul Kabir[Vol:6] , Tabaqat[Vol:3] , Tabaqat[Vol:7] , Siyar A'lam[1/5-23] , Tahdheeb al-Tahdheeb[Vol:5] , Tahdheeb al-Tahdheeb[Vol:12] , Taqrib al-Tahdheeb , Taqrib al-Tahdheeb
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