Where does “сура” come from?

сура (Belarusian) comes from Arabic سُورَة — chapter of the Qur'an; sura.

сура (Belarusian): sura

Definitions

Step	Language	Word	Meaning
1	Arabic	سُورَة	chapter of the Qur'an; sura

сура — Etymology, Origin & Word History | Etymology Explorer