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Fakhr al Din Abu Shuja Muhammad ibn Ali ibn Shu'ayb inb al-Dahhan al-Baghdadi, was born in Baghdad and died in 1194.

Biography
He was the son of an oil merchant (al-dahhan) and lived the live of a jurist, mathematician, and astronomer. He lived for a longer period in Mosul, Irbil and Damascus under the regency of Ayyubid Sultan Slah a-Din also known as Saladin(1185-1194).

Table that Shows Disagreements
This book was written in 1167 and still exists in two versions (one held in Cairo and another one held in Paris). It contains - as the title indicates - a table with 10 colons. Colon 1 represents questions and table 2-9 the answers from different schools.

List of works

 * Taqwim al-nazar fi'l-masail al-khilafiyya (Table to View Questions that Show Disagreements)
 * Zij - A book an astronomy