Saqāliba (Arabic: صقالبة, sg. Siqlabi) refers to Slavic slaves, captured on the coasts of Europe in raids or wars, as well as mercenaries in the medieval Muslim world, in the Middle East, North Africa, Sicily and Al-Andalus. It is generally thought that the Arabic term is a Byzantine loanword: saqlab, siklab, saqlabi etc. is a corruption of Greek Sklavinoi meaning Slavs (from which the English word slave is also derived. The word is often misused to refer only to slaves from Central and Eastern Europe, but it refers to all Eastern Europeans and others traded by the Arab traders during the war or peace periods.
There were several major routes of the trade of Slav slaves into the Muslim world: through Central Asia (Mongols, Tatars, Khazars, etc.); through the Mediterranean (Byzantium); through Central and Western Europe to Al-Andalus. The Volga trade route and other European routes, according to Ibrahim ibn Jakub, were serviced by Radanite Jewish merchants. Theophanes mentions that the Umayyad caliph Muawiyah I settled a whole army of 5,000 Slavic mercenaries in Syria in the 660s.