Mustadrak al-Hakim — Hadith 299

It is narrated from Sayyiduna Jubayr bin Mut'im (may Allah be pleased with him) that he said: I heard the Messenger of Allah (peace and blessings be upon him) saying, while at the place of the Masjid of al-Khayf in Mina: "May Allah have mercy on the servant who heard my words, memorised them, and then conveyed them to those who did not hear them; for many a bearer of knowledge is not himself a man of understanding, and many a bearer of knowledge takes it to those who have more understanding than they. There are three things over which the heart of a believer does not bring in impurity (or dust): sincerity in deeds, sincere counsel to the rulers, and keeping with the community (jama'ah); for their call protects them from behind."
In this chapter there are hadiths narrated from a group of the Companions, including Umar, Uthman, Ali, Ibn Mas'ud, Mu'adh bin Jabal, Ibn Umar, Ibn Abbas, Abu Hurayrah and Anas (may Allah be pleased with them), and the hadith of Nu'man bin Bashir meets the condition of the Sahih.