It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "May Allah Almighty keep fresh and radiant the person who heard my words and preserved them, for many a bearer of understanding is not himself a person of understanding, and many a bearer of understanding conveys it to one who has more understanding than he. There are three things about which the heart of a Muslim man harbours no rancour or treachery: making one's deeds sincerely for Allah, sincere counsel to those in authority, and holding fast to the community of the Muslims, for their supplication surrounds them from behind."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from al-Harith al-Ukli except al-Qasim bin al-Walid, and no one narrated it from al-Qasim except Ubaydah bin al-Aswad; Abdullah bin Muhammad bin Salim is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الميم / 5179
Hadith Takhrij«أخرجه ابن حبان فى «صحيحه» برقم: 66، 68، 69، والترمذي فى «جامعه» برقم: 2657، 2658، وابن ماجه فى «سننه» برقم: 232، وأحمد فى «مسنده» برقم: 4240، والحميدي فى «مسنده» برقم: 88، وأبو يعلى فى «مسنده» برقم: 5126، 5296، والبزار فى «مسنده» برقم: 2014، 2019، 2018، والطبراني فى «الأوسط» برقم: 1304، 1609، 7690»