Hazrat Abu Musa Ghafiqi (may Allah be pleased with him) heard Hazrat Uqbah bin Amir Juhani (may Allah be pleased with him) narrating some ahadith from the pulpit regarding the Prophet Muhammad (peace and blessings be upon him), so he said: "This companion of yours is either a memorizer or one who will perish. The last advice the Prophet Muhammad (peace and blessings be upon him) gave us was this: 'Hold fast to the Book of Allah. Soon you will reach a people who will love the narration of hadith from me. Remember! Whoever attributes something to me which I have not said, let him make his abode in Hell. And whoever preserves my hadith well, he should convey it further.'"