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Hadith was ever since transmitted orally. Why? because this is the way knowledge was spread and gathered and so was the qur'an transmitted to us until today. As long as you have not cross-checked your memorization of the qur'an by a hafidh with a sanad to the prophet you may not be a hafidh of qur'an, but a hafidh of a moshaf. In fact when it comes to hadith ...


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