The principles explained at the beginning of this treatise have extreme importance. As for the prophetic Hadiths related, they are accepted as authentic by the authorities on Hadith, and they report the most established phenomena concerning the messengership of Muhammad (Upon whom be blessings and peace). Now, to enumerate the merits of this treatise, another treatise of the same length would be needed; we therefore invite those who wish to read it, if only once.
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