Ibrahim ibn Yaqub

His travelogue, Kitab al-Istibsar includes descriptions of various cities and regions as well as accounts of the customs and daily life of the people he encountered on his travels.

"[2] In 961–62 he travelled in Western and Central Europe and in Italy at least as far as Rome, where he was received with an audience with Otto I, Holy Roman Emperor during the first week of February.

The memoirs and commentaries of his journey, possibly first presented to the Cordoban caliph Al-Hakam II (961–976), have been lost; only excerpts by later authors have been preserved, principally Abu Abdullah al-Bakri's Book of Highways and of Kingdoms and the work of Zakariya al-Qazwini, possibly via the writings of Al-Udri.

[3] His work is widely known as providing the first reliable description of the Polish state under Mieszko I, the first historical ruler of Poland.

Ibrahim ibn Yaqub has a unique place in Czech history as the first person to mention the city of Prague and its Jewish community in writing.