"We have only one condition to sit with one unified patriotic opposition that we can see as a partner… Opposition that condemns terrorism and does not work for foreign agenda," Jaafari told reporters after a meeting with UN Special Envoy for Syria Staffan de Mistura.
According to Jaafari, all the participants of the talks should condemn a recent terrorist attack in Syrian Homs, which left over 30 people dead on Saturday.
"If anyone refuses, we will see them as accomplice to terrorism and act accordingly," Jaafari added.
Earlier in the day, Talal Barazi, the governor of the Homs province, said that a total of 32 people had been killed and 24 injured as a result of terrorist attacks at state military facilities in Homs.
Al-Nusra Front terrorist group, has reportedly claimed responsibility for the attacks.