Mahasaptami- the second day
On this dawn the priests go to nearby river and fill up a clay pitcher with river water after performing puja, that pitcher becomes the mangalghat- the holy ghat, the symbol of Goddess herself. The ghat is brought back to the altar and placed near the Goddess till Vijayadashami.
Full details: https://window2mysoul.wordpress.com/durgapuja-in-the-traditional-way/
Wish you all a very blessed Durgapuja!