The SC also commuted the death sentence of Tariqul Islam to life imprisonment in the case.
Advocate Helal Uddin Molla stood for the petitioner while deputy attorney general Bashir Ahmed represented the state.
Miliara Khatun and her daughter Parveen of Godagari upazila in Rajshahi district were killed on 10 October, 2006.
In 2008, a court in Rajshahi sentenced Ismail, Sonadi and Tariqul to death in the double murder case.
Later, the convicts filed separate appeal petitions before the High Court.
In 2014, the High Court upheld the death sentence of the convicts.