Abd Allah B.Sa’d, believed in Islam and for a short time recorded divine revelations; but then he lost his faith. Historical studies prove that his apostasy has no relation to writing celestial words. But story-writers who often lack an analytical mind, perhaps credulously or tendentiously connect his blaspheme to the act of recording sacred verses. These unfounded stories have entered history books and even crossed the seas. A 20th century Italian writer (Italo Calvino) comments on this story according to his narrative theories. Centuries earlier, a Persian Sufi (Rumi), in accordance with his mystical believes has interpreted the abovementioned story. As a comparative study of literature, this article attempts to introduce an example of interactions between Iranian culture and the occidental world.