Kitabs are books written in Belarusian language using Arabic script. They were written mostly in the 16th century by the Tatars who lived in Belarus, in the Grand Duchy of Lithuania, since 14-15th centuries and have gradually forgotten their native language. In order to preserve their religion they had to translate Koran and other sacred Islamic books into Belarusian language, but preserving the Arabic script.
Kitabs contain Oriental legends, fables, adventure stories, description of rituals, the so called Meradj- (a poem about Muhammed ascending to heaven), narratives for youth about moral and ethical behavior (respect for parents, guests, beggars, orphans, neighbors, etc.), fortune telling on Koran letters, interpretation of dreams. Apart from kitabs there were also other related books: tefsirs (Koran with line-by-line commentary in Belarusian and Polish), tejvijs (the rules of Koran reading), hamails (special prayer books).