Sub-Divisional Judicial Magistrate (SDJM) Javed Ahmad accepted their prayer for mutual compromise and closed the matter today.
Singh, Minister for Road Construction, had filed a defamation case against Devi during the 2009 general elections for alleged abusive language she had used against him during an election campaign in Saran district.
Devi, wife of RJD President Lalu Prasad, had filed a petition in the court on August 31, 2009, seeking exemption from personal appearance.
The court had framed charges against Devi on February 26, 2010, and the case had been pending at the trial stage since then.