It is narrated from Sayyiduna Anas (may Allah be pleased with him) that Sayyiduna Abu Talha (may Allah be pleased with him) used to fast frequently during the time of the Messenger of Allah (peace and blessings be upon him). But when the Messenger of Allah (peace and blessings be upon him) passed away, after that he would only miss a fast due to travel or illness.

Sayyiduna Abu Musa Ash'ari (may Allah be pleased with him) narrates that when Allah Almighty caused the Banu Hawazin to be defeated at Hunayn, the Messenger of Allah appointed Sayyiduna Abu Amir Ash'ari (may Allah be pleased with him) over a cavalry detachment to pursue the fleeing polytheists. He set out after them, and I was with him. Sayyiduna Abu Amir's (may Allah be pleased with him) horse quickly took him ahead of the rest, and he caught up with Ibn Duraid. But Ibn Duraid killed Sayyiduna Abu Amir (may Allah be pleased with him) and seized his flag. Then I pursued Ibn Duraid, killed him, and took the flag back into my possession, and I returned with the people. The Messenger of Allah saw the flag being carried and said: "O Abu Musa! Has Abu Amir been killed?" I replied: "Yes, O Messenger of Allah!" I saw the Messenger of Allah (peace and blessings be upon him) raising both his hands and supplicating: "O Allah, make Your beloved servant Ubaid Abu Amir among those on the Day of Resurrection who have many righteous deeds and countless elevated ranks."

It is narrated from Shurayh bin Ubaid, Rashid bin Sa’d, and others that when Sayyiduna Umar bin Khattab (may Allah be pleased with him) reached the place of Sargh, he received news that a severe epidemic had broken out in the land of Syria. He said to the people: I have received news that a severe epidemic has spread in Syria. I have thought that if death overtakes me and Sayyiduna Abu Ubaidah bin Jarrah (may Allah be pleased with him) remains alive, I will appoint him as my successor. If Allah asks me why I appointed him as the caliph over the Ummah of Muhammad (peace and blessings be upon him), I will reply that I heard Your Messenger (peace and blessings be upon him) say: Every prophet has a trustworthy man, and my trustworthy man is Abu Ubaidah bin Jarrah (may Allah be pleased with him). The people, rejecting the statement of Sayyiduna Umar (may Allah be pleased with him), said: What will become of the nobles of Quraysh? By this, they meant the people of Banu Fihr. But Sayyiduna Umar (may Allah be pleased with him) said: If death comes to me after Abu Ubaidah (may Allah be pleased with him), then I will appoint Sayyiduna Mu’adh bin Jabal (may Allah be pleased with him) as the caliph. If my Lord, the Mighty and Majestic, asks me why I appointed him as the caliph, I will say that I heard Your Messenger (peace and blessings be upon him) say: Mu’adh will lead the scholars on the Day of Resurrection.

It is narrated from Abdullah bin Shaqiq, he says: I asked Sayyida Aisha Siddiqa (may Allah be pleased with her): Which companion was most beloved to the Messenger of Allah (peace and blessings be upon him)? She said: Sayyiduna Abu Bakr (may Allah be pleased with him). I asked: Who was beloved after him? She said: Sayyiduna Umar (may Allah be pleased with him). I said: After him? She said: Sayyiduna Abu Ubaidah bin Jarrah (may Allah be pleased with him). I asked: Who after him? But this time she remained silent.

It is narrated from Abu Bakhtari that Sayyiduna Umar (may Allah be pleased with him) said to Sayyiduna Abu Ubaidah bin Jarrah (may Allah be pleased with him): "Extend your hand so that I may pledge allegiance to you, because I heard the Messenger of Allah (peace and blessings be upon him) say that you are the trustworthy one of this Ummah, that is, an extremely reliable man." So Sayyiduna Abu Ubaidah (may Allah be pleased with him) said: "How can I go ahead of the man whom the Messenger of Allah (peace and blessings be upon him) commanded to lead us in prayer, and then he led us in prayer until his death?"

It is narrated from Abdul Malik bin Umair that when Sayyiduna Umar bin Khattab (may Allah be pleased with him) dismissed Sayyiduna Khalid bin Walid (may Allah be pleased with him) and appointed Sayyiduna Abu Ubaidah bin Jarrah (may Allah be pleased with him) as the governor of Syria, Sayyiduna Khalid bin Walid (may Allah be pleased with him) said: The trustworthy and most reliable man of this Ummah has been sent to you. I heard the Messenger of Allah (peace and blessings be upon him) say that the trustworthy one of this Ummah is Abu Ubaidah bin Jarrah (may Allah be pleased with him). Sayyiduna Abu Ubaidah bin Jarrah (may Allah be pleased with him) said: I also heard the Messenger of Allah (peace and blessings be upon him) say that Khalid bin Walid is one of the swords of Allah and the best individual of his family.

It is narrated from Ibn Mas'ud (may Allah be pleased with him) that two representatives, 'Aqib and Sayyid, from the ruler of Najran came; they wanted to engage in mutual imprecation (mubahala) with the Messenger of Allah (peace and blessings be upon him). But one of them said to the other: Do not engage in mubahala with this Muhammad (peace and blessings be upon him). By Allah! If he is a true Prophet and we engage in mubahala with him, then neither will we prosper nor will our descendants after us ever prosper. They presented themselves before the Messenger of Allah (peace and blessings be upon him) and said: We will not engage in mubahala with you; however, we will fulfill your demand. Send with us a trustworthy man so that we may pay him the agreed-upon wealth according to the peace treaty. The Noble Prophet (peace and blessings be upon him) said: I will send with you a man who is truly trustworthy and honest. Upon hearing this, all the Companions raised their eyes towards the Messenger of Allah (peace and blessings be upon him) (to see who would be granted this honor). Then the Prophet (peace and blessings be upon him) said: Abu 'Ubaydah! Stand up. When Sayyiduna Abu 'Ubaydah (may Allah be pleased with him) set out with them, the Noble Prophet (peace and blessings be upon him) said: This Abu 'Ubaydah (may Allah be pleased with him) is the trustworthy and reliable man of this Ummah. Sayyiduna Hudhayfah bin Yaman (may Allah be pleased with him) also narrated a similar hadith from the Noble Prophet (peace and blessings be upon him).

Sayyiduna Hudhayfah bin Yaman (may Allah be pleased with him) also narrated from the Noble Prophet (peace and blessings be upon him) a narration similar to the previous hadith.

It is narrated from Sayyiduna Anas bin Malik, may Allah be pleased with him, that when the people of Yemen came to the Messenger of Allah, peace and blessings be upon him, and requested: "Send with us a man who will teach us the Sunnah and Islam." The Messenger of Allah, peace and blessings be upon him, took the hand of Sayyiduna Abu Ubaidah bin Jarrah, may Allah be pleased with him, and said: "He is the trustworthy and honest man of this Ummah."

It is narrated from Shahr bin Hawshab Ash'ari, who narrates from his stepfather, a man from his tribe, who married his mother after the death of his father and was present at the time of the plague of 'Amwas. It is narrated from him that when the epidemic of plague spread there, Sayyiduna Abu Ubaidah bin Jarrah (may Allah be pleased with him) stood up and addressed the people and said: O people! This disease is a mercy from your Allah, the result of your Prophet's supplication, and the cause of the death of the righteous before you. And Abu Ubaidah prays to Allah that He grants him a share of it as well. It is narrated from Rabah that after this supplication, Sayyiduna Abu Ubaidah (may Allah be pleased with him) was afflicted with the plague and passed away, and he appointed Sayyiduna Mu'adh bin Jabal (may Allah be pleased with him) as the leader over the people. After the passing of Sayyiduna Abu Ubaidah (may Allah be pleased with him), Sayyiduna Mu'adh (may Allah be pleased with him) stood up and addressed the people, saying: O people! This disease has been a mercy from your Lord, the supplication of your Prophet, and the cause of the death of the righteous before you. And Mu'adh prays to Allah that He grants the family of Mu'adh (may Allah be pleased with him) a share of this disease. It is narrated from Rabah that after this, the son of Sayyiduna Mu'adh (may Allah be pleased with him), Abdur Rahman bin Mu'adh, was afflicted with the plague and passed away. After this, Sayyiduna Mu'adh (may Allah be pleased with him) prayed to his Lord for himself, so a boil of plague appeared on his palm. I saw Sayyiduna Mu'adh (may Allah be pleased with him) looking at that boil and kissing the back of his palm, saying: I do not prefer that, because of you, I would receive all the wealth of the world instead of the rank I am to receive. Then, when he passed away, he appointed Amr bin al-As (may Allah be pleased with him) as his deputy over the people. He too stood among us and addressed the people, saying: O people! When this disease begins, it spreads like the flames of fire. To save yourselves from it, go out towards the mountains. Upon hearing this, Abu Wathilah Hudhali (may Allah be pleased with him) said: What you have said is not correct. I have been in the company of the Messenger of Allah (peace and blessings be upon him). You are even worse than my donkey. Sayyiduna Amr bin al-As (may Allah be pleased with him) said: By Allah! I will not answer you, but by Allah! In these circumstances, we cannot stay here. Then he left from there, and the people also left with him. When they left that area of the plague, Allah also removed it from them. When this news reached the Commander of the Faithful, Sayyiduna Umar (may Allah be pleased with him), he did not dislike this action.