Akshayavat or Akshay Vat is a sacred fig tree cited within the Hindu mythology. According to a legend, as soon as the sage Markandeya asked Lord Narayana to expose him a specimen of the divine strength. Narayana flooded the entire international for a moment, throughout which best the Akshayavat might be visible above the water level. A tree in Prayag has been described as Akshayavat in the Prayag Mahatmya of the Matsya Purana. Rama, Lakshmana and Sita are stated to have rested under this tree. The Chinese Buddhist pilgrim Xuanzang mentions a tree which became said to be the house of a person-eating demon.
As part of a custom, some pilgrims could offer themselves on the nearby temple. Xuanzang mentions that the tree changed into surrounded with the human bones. Alexander Cunningham diagnosed this tree with the Akshayavat at Prayag. Rishabha is likewise stated to have practised tapasya below the historical Akshayavat at Prayag. Currently, a sacred fig tree located inside the Patalpuri Temple at the Allahabad Fort is worshipped because the Akshayavat defined in historic texts. As of 2011, a permission from the Commandant of Allahabad Fort's Ordnance Depot is wanted to visit this tree.