Abu Amr Muhammad al-Kashi

Ibn Cumar Kashshi ya kasance marubuci kuma masanin hadisai a zamaninsa. Ya shahara sosai saboda littafinsa mai suna 'Rijal al-Kashshi', wanda ya kunshi bayanai da tarihin masu ruwayar hadisai musamman a tsakanin mabiya Shi'a Imamiyya. Aikinsa ya taimaka wajen fahimtar ilimin rijal, wato nazarin halayyar masu ruwayar hadisai don tantance ingancin hadisai. Littafinsa har yanzu ana amfani da shi a matsayin muhimmin tushe a ilimin rijal da kuma nazarin tarihin Islama.