Sayyiduna Mu'adh bin Jabal (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "May Allah make radiant a servant who heard my words and then added nothing to them, for many a bearer of understanding conveys it to one who has more understanding than he." He also said: "There are three things over which the heart of a believer never harbours rancour: sincerity of action for Allah, sincere goodwill towards those in authority, and holding fast to the community of the Muslims, for their supplication encompasses those behind them."
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 17291