Lot Essay
All the ownership notes on this manuscript relate to Turkish owners, one of which was a teacher at the madrasa of Ghazanfar Agha in Istanbul called 'Abd al-Rahman. A long note on the opening pages gives a biography of the author described as 'one of the theologians of the time of Sultan Bayezid bin Sultan Muhammad'. He had begun to write the text in 795 and ceased working in 844 after having written only thirty of the one hundred chapters corresponding to the same number of sciences he wished to include in this encyclopaedia (A. Mingana, Catalogue of the Arabic manuscripts in the John Rylands Library, Manchester, 1934, No 764).