Abu'l-Harith al-Layth ibn Sa'd, the greatest jurist and hadith scholar of Egypt of his era; al-Shafi'i held him a greater jurist than Malik. He died in 175/791 and was buried in al-Qarafa al-Sughra. The mosque-mausoleum was built in 640/1242. No two independent coordinate sources were found, so location is unpinned. (Sources: TDV 'Leys b. Sa'd'; Archnet.)