As part of the decorations, special flags and banners have been installed in different parts of the mausoleum.
The event of Ghadir, or Eid al-Ghadir, is celebrated by Shia Muslims around the world every year. It is among important feasts and happy holidays of Shia Muslims held on the 18th day of Dhul Hijja in the lunar Hijri calendar.
It was the day when according to reports, the Holy Prophet (PBUH) appointed Ali ibn Abi Talib (AS) as his caliph and the Imam after himself following an order from God.
This year, Eid al-Ghadir falls on Tuesday, August 20.