The decision by Douma City Council in the Damascus countryside prohibits “the groom entering women’s celebrations in the halls of Douma city”, according to a copy of the order published by the council.
It means that even the groom himself cannot enter the women’s section of a wedding celebration.
In socially conservative parts of Syria, weddings are usually segregated by gender. However at the end of the women’s party the groom usually enters to meet the bride and take her home.
Raises hand the idea behind a gender-segregated wedding is that it’s, well, gender-segregated. According to the article an exception is usually made for the groom to take the bride from the women’s section, but the city council in question was like “wait this defeats the point” and wanted to outlaw that exception. The groom isn’t banned from the whole wedding, just the women’s section. As for why do any of that, gender-segregation is a universal part of tradition and/or religion (this is a meaningful distinction because they do disagree sometimes, just not here) in Muslim societies, so it’s something socially conservative people will want to do out of principle.