Analysis of information sources in references of the Wikipedia article "Islamic inheritance jurisprudence" in English language version.
At this point it would be well to make a few remarks about Fibonacci's fractions. The first thing to note is the format, 1/2 4, which means four and a half. The format is unique to Andalusia and the Maghrib and reflects the Arabic method of writing from right to left, something Fibonacci most probably learned as a student in a Moslem school in Bougie.