The Phalgu River in Gaya holds special sanctity as it is believed to flow underground due to a curse by Sita Mata. As per the Ramayana, Lord Rama, along with Sita and Lakshman, came to Gaya to perform Shraddha for Dasharatha Maharaj. When no Brahmins were available, Sita herself made the offerings. When Lord Rama returned, the river denied witnessing it, causing Sita to curse it to run underground. Today, the dry riverbed is a place where Pind Daan is performed, and offerings are made to both ancestors and Mata Sita, recognizing her role in the Shraddha Katha.