The sources said that based on the agreement some of Jeish al-Islam militants from Douma will be evacuated to the town of Jarabulus (under the control of the Turkish-backed militants) in Northeastern Aleppo while other fighters will reconcile with the Syrian government.
Russian military police are poised to soon enter Douma where they will establish evacuation corridors, monitor the militants' withdrawal and host temporary humanitarian infrastructures.
Furthermore, Jeish al-Islam is to hand over all hostages (civilians and troops) to the Syrian Army as well as the corpses of fallen government ranks.
While it is unknown whether or not the Syrian Army will enter Douma anytime soon, all government institutions once housed in the town are to be immediately reinstated; civil servants are to return to their jobs at these places.
Massdar news quoted other sources as saying earlier today that the Syrian government and Russia have allowed Jeish al-Islam to transport their wounded fighters to Idlib in exchange for an extended ceasefire inside the town of Douma.
According to a military source in Damascus, a full agreement is expected to be announced in the next 48 hours.
The source added that Jeish al-Islam is close to accepting all the Syrian army terms, including the militants' departure from Douma to Northern Syria.