It is narrated from Sayyiduna Mu'adh bin Jabal (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Beware of oppression, for oppression will be many layers of darkness on the Day of Resurrection; and beware of stinginess and greed, for it destroyed those who were before you: it commanded them to sever ties of kinship, so they severed their ties; and it commanded them to shed blood, so they shed one another's blood."
Then a man stood up and said: "O Messenger of Allah, which deed in Islam is the most excellent?" The Messenger of Allah (peace and blessings be upon him) said: "The most excellent in Islam is the one from whose tongue and hand the Muslims are safe."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Qatadah (may Allah have mercy on him) except Sa'id; Abu Muti' is alone in narrating it, and this hadith is narrated from Sayyiduna Mu'adh (may Allah be pleased with him) only with this chain."
Hadith Referenceالمعجم الأوسط / باب الجيم / 3340
Hadith Gradingمحدثین:فيه جماعة لم يعرفهم الهيثمي
Hadith Takhrij«قال الهيثمي: وفيه جماعة لم أعرفهم «مجمع الزوائد ومنبع الفوائد، ج 5، ص 235»»