He then forces the man to the ground and ties his hands behind his back.
Thabit has been hailed as a hero by Iraqi Prime Minister Haider al-Abadi, the MailOnline reports.
The dramatic arrest in the Kadhimiyah neighbourhood of Baghdad on Wednesday was also caught on CCTV and has since attracted hundreds of thousands of views.
Thabit discovers and disarms the bomber during a routine checkpoint search.
Other shocked people lined up at the checkpoint run away in terror when the belt is discovered.
Baghdad has experienced a wave of deadly bombings this month that killed more than 200 within one week.
ISIS still controls some key areas in western and northern Iraq, including the country’s second largest city, Mosul.