Mohammad Al Juwaihal also was ordered to pay $17,652 in compensation to his victim, Hamad Al Mattar, Gulf News reported.
The incident occurred May 5, 2012, during a debate in the parliament. People present at the time said Juwaihal was drunk.
Juwaihal was subsequently barred from entering the parliament's premises or attending any sessions.
In a separate case, the trial of blogger Sarah Al Driss was postponed until March 27 on request of her attorney. She is charged with undermining the status of the emir, taking part in an unlawful rally and misusing her telephone.
The trial of four people working for a private television station was adjourned until April 10. They are accused of reading out a communiqué during a news broadcast.