The vessel containing water used in rituals is called Pancha patra. Pancha means five. In elaborate worship, five vessels are used- Vishesha arghya patra containing a mix of 8 dravyas, Nirodha arghya patra containing a mix of 7 dravyas, Parangmukha arghya patra containing a mix of 6 dravyas, Padya patra, and Achamaniyaka patra. Even if only one vessel is used in their place, it came to be called Pancha patra.
Bhardwaj ashram is located at Prayagraj, Uttar Pradesh