But the dispute emerged as some of the rebels refused to leave Douma, the last rebel-held stronghold in Eastern Ghouta after 43,000 rebels and their families had been evacuated to the Idlib province in northwestern Syria.
Jaish al-Islam is the last remaining rebel group in Eastern Ghouta but has repeatedly denied agreeing to leave the area.
Iyad Abdelaziz says there is no agreement reached to have the Army of Islam rebel faction leave Douma for north Syria and hand over the town to government forces.
The Syrian rebel group Jaish al-Islam released five prisoners on Wednesday as part of a deal over the eastern Ghouta town of Douma, the Syrian Observatory for Human Rights and state media said.
In previous evacuations, buses leaving Douma have gathered near Wafideen or on the side of the motorway outside Damascus, and waited for hours for others to join them before setting off as a full convoy to northern Syria. There was no comment from the Army of Islam.
Thousands of civilians returned homes in the villages and towns of eastern Ghouta in Damascus countryside after the Syrian Army restored security and stability to them and eradicated the Takfiri terrorist organizations from them.
Douma was one of the earliest centers of the anti-government demonstrations that swept through the country in March 2011.
China responds in kind after United States proposes 25% tariffs on Chinese imports
The US sanctions are meant to punish China for deploying strong-arm tactics in its drive to become a global technology power. Though the tariffs are not in place yet, the news had an immediate impact on markets, including the soybean market.
The deal over Douma would mark the end of a weeks-long push by Assad's forces to consolidate their control over eastern Ghouta, just outside the capital.
An opposition official told the Saudi TV channel al-Arabiya that the Army of Islam was still engaged in talks with Russian Federation over the future of Douma.
Local activists have said that over 100,000 civilians were trapped inside Douma, which suffered devastating damage. He said Turkey was also participating in the talks.
Damascus:China has donated $1 million in aid to the World Food Programme (WFP) in Syria to purchase food for the war-stricken Syrians, the Chinese Embassy in Syria has said.
Since February 19, more than 1,600 people have been killed in attacks by the regime and its allies in eastern Ghouta, according to local civil-defence sources.
On Wednesday, the leaders of Russian Federation, fellow regime supporter Iran and rebel-backer Turkey are to meet for a summit devoted to Syria.
Turkey and Russian Federation will collaborate to establish a hospital in Syria's Tel Abyad to treat those escaping Eastern Ghouta, Turkish President Recep Tayyip Erdogan said.