It is narrated from Sayyiduna Abdullah bin Amr bin al-As (may Allah be pleased with them both), he says: Whatever I used to hear from the Messenger of Allah (peace and blessings be upon him), I would write it down with the intention of remembering it. But the Quraysh forbade me from doing so and said: "You write down everything you hear from the Messenger of Allah (peace and blessings be upon him), while he is a human being and speaks in both states of anger and happiness." So I stopped writing and informed the Messenger of Allah (peace and blessings be upon him) about this. He (peace and blessings be upon him) said: "You write! By the One in whose hand is my soul, nothing comes from me except the truth."