Sayyiduna Umar bin Khattab (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him and his family) said about Sayyiduna Mu'adh bin Jabal (may Allah be pleased with him): On the Day of Resurrection, he will be ahead of the people of knowledge by the distance of an arrow's throw.

It is narrated from Sayyiduna Anas bin Malik, may Allah be pleased with him, that the Messenger of Allah, peace and blessings be upon him, said: Abu Bakr is the most compassionate towards my Ummah, Umar is the most strict regarding religion among my Ummah, Uthman is the most modest, and Sayyiduna Mu'adh bin Jabal, may Allah be pleased with him, has the greatest knowledge of what is lawful and unlawful.

It is narrated from Sayyiduna Mu'adh bin Jabal (may Allah be pleased with him), he says: The Messenger of Allah (peace and blessings be upon him) met me and said: O Mu'adh! I love you. I said: O Messenger of Allah! By Allah, I also love you. The Messenger of Allah (peace and blessings be upon him) said: I advise you with a few words, say these words at the end of every prayer: "O Allah! Help me to remember You, to thank You, and to worship You in the best manner."

It is narrated from Sayyiduna Mu'adh bin Jabal (may Allah be pleased with him) that when the Messenger of Allah (peace and blessings be upon him) sent him towards Yemen, he gave him some advices. Sayyiduna Mu'adh (may Allah be pleased with him) was riding, and the Messenger of Allah (peace and blessings be upon him) was walking alongside his mount. After finishing his conversation, he said: "Mu'adh! It is possible that after this year you may not meet me again, and it may be that you pass by my mosque or my grave." Sayyiduna Mu'adh (may Allah be pleased with him) wept out of grief at the thought of separation from the Messenger of Allah (peace and blessings be upon him). Then the Messenger of Allah (peace and blessings be upon him) turned his face towards Madinah Munawwarah and said: "The people closest to me among all people are those who possess the quality of taqwa (piety), whoever they may be and wherever they may be."

It is narrated from Amr bin Maymoon Audhi, he says: The agent of the Messenger of Allah, peace and blessings be upon him, our master Mu'adh bin Jabal Yamani, may Allah be pleased with him, came to us. I heard that at the time of suhoor he said "Allahu Akbar" in a loud and clear voice. Love for him settled in my heart, and I did not separate from him until his death. I even put soil on his grave after his death in Sham. After that, I did not consider who was the most knowledgeable person after him. So I went to the service of Abdullah bin Mas'ud, may Allah be pleased with him. He said to me: What will be your condition when your rulers will delay the prayers, i.e., perform them out of their proper time? I asked: If I face such circumstances, what do you command me to do? He said: You should perform the prayer at its earliest time, and count the prayer performed with them as nafl (supererogatory).

It is narrated from Abu Muneeb Ahadab that Sayyiduna Mu’adh (may Allah be pleased with him) delivered a sermon in Syria and, mentioning the plague, said: The plague is a mercy from your Lord upon you, and a supplication of your Prophet, and for those before you, it was the cause of the death of the righteous. O Allah! Send down upon the family of Mu’adh their share from this mercy. After this, Sayyiduna Mu’adh (may Allah be pleased with him) descended from the pulpit and came to his son Abdur Rahman. Abdur Rahman said: (الْحَقُّ مِنْ رَبِّكَ فَلا تَكُونَنَّ مِنَ الْمُمْتَرِينَ) .... The truth is from your Lord, so do not be among those who doubt. Hearing this, Sayyiduna Mu’adh (may Allah be pleased with him) said: (سَتَجِدُنِي إِنْ شَاءَ اللَّهُ مِنَ الصَّابِرِينَ) .... Soon, if Allah wills, you will find me among the patient ones.

It is narrated from Ismail bin Ubaidullah that Sayyiduna Mu'adh bin Jabal (may Allah be pleased with him) states that the Messenger of Allah (peace and blessings be upon him) said: Soon you people will migrate towards the land of Sham, and it will be conquered at your hands, and among you a disease like a piece of flesh (i.e., plague) will enter, which will affect the lower part of a person's abdomen. Allah Almighty will grant people the rank of martyrdom through this disease and will purify their deeds. O Allah! If You know that Mu'adh bin Jabal truly heard this hadith from the Messenger of Allah (peace and blessings be upon him), then grant him and his family an abundant share of this disease. Consequently, those people were afflicted by the plague, and not one of them survived. Sayyiduna Mu'adh (may Allah be pleased with him) had his index finger wounded, so he used to say that he would not like his finger to be saved and for him to receive red camels.