It is narrated from Yazid bin Amirah that when the time of death drew near for Sayyiduna Mu'adh bin Jabal (may Allah be pleased with him), it was said to him: O Abu Abd al-Rahman! Give us advice. He said: Sit me up. Then he said: Indeed, knowledge and faith remain (firm) in their place; whoever seeks them will find them. He said this three times. And seek knowledge from these four people: Uwaymir Abu al-Darda, Salman al-Farisi, Abdullah bin Mas'ud, and Abdullah bin Salam (may Allah be pleased with them), who was formerly a Jew and then accepted Islam, for I heard the Messenger of Allah (peace and blessings be upon him) say: "He is the tenth of ten (given glad tidings) in Paradise." This hadith has a sahih (authentic) chain, but the two Shaykhs did not record it.