Hon Farouk Lawan, a former member of the House of Representatives, was sentenced to seven years in prison by the Federal Capital Territory (FCT) High Court.
In 2012, Lawan was found guilty of soliciting bribes from billionaire businessman Femi Otedola during an investigation into fuel subsidies.
While Goodluck Jonathan was president, he chaired the ad-hoc committee that investigated fuel subsidies.
Otedola accused Lawan of requesting $3 million for Zenon Petroleum and Gas Limited, his company, to be removed from a list of companies under investigation.
He was accused of receiving a $500,000 bribe from Otedola by the Independent Corrupt Practices and Other Related Offences Commission (ICPC), but he denied the allegations.
On Tuesday, however, Justice Angella Otaluka convicted Lawan of three counts.
The charges were that he obtained money from Otedola.
For counts one and two, he was sentenced to seven years, while for count three, he was sentenced to five years.
The sentences are to run concurrently.