Searchable Online Version Ibn Abī Thābit al-Lughawī, Al-Farq الفرق لابن أبي ثابت

Al-Farq is a book concerned with the differences in terminology in words used to refer to human body parts compared to animal body parts. It was written by the Ibn Abī Thābit al-Lughawī, about whom little is known other than his being a respected grammarian of the Kufic school in the third century AH. There is a report of him being active in the year 220 AH, equivalent to c. 835 CE.