The plaint-petition was filed in the court of Chief Judicial Magistrate Sanjay Pandey here. It demands damages of Rs one crore from the Leader of the Opposition.
Ajay, making corruption accusations against the couple, had reportedly dubbed Chouhan's wife as 'money counting machine' at a rally at Khargone on June 4 and Sagar on June 9 this year.
Petitioners Shivraj Singh Chouhan and Sadhna Chouhan seek that court should direct Ajay Singh to pay Rs one crore. The amount would be used to rehabilitate the families affected by recent tragedy in Uttarakhand, adds the petition.
The court would record the statements of Chouhan and his wife on July 30.
Earlier, the Chief Minister had issued a legal notice to Ajay, demanding unconditional apology.