Ekashna (ek din ka ek bhojan) ke dauran aam taur par pani peena, dono tarah ki pyaas bujhane ke liye, mana ya mana nahi ki ja sakti hai, yeh dharmik parampara par nirbhar karta hai. Saral roop se:

• Pani peena: Bahut se Jain shastr aur guru-log is dauran pani peene ki anumati dete hain. Water (pani) ek shuddh avashyak tātva hai aur bhojan ke roop me na aaya jaata, isliye aksar mana nahi hota.
• Garam pani (hot water): Zyada tar samajh me aata hai ki garam pani ya narm pani bhi pani hi hai, isliye bahut se sadhu-sant isko bhi swikar karte hain. Kintu kuch pravrttion ya vichardharaon me yeh mana ya shartein lag sakti hain — jaise ki shakt/adhik sakht niyam wale vishesh samudayon me.

Antim roop me, Digambar aur Shwetambar ke beech kuch chhote antar ho sakte hain, par aam taur par dono hi paramparaon me pani peene ki jaankari samanya roop se svikrit hoti hai. Agar aap kisi guru ya ashram ki specific maryada follow kar rahe hain, to unke niyam dekh lein ya unse puch lein.

Aap chahein to main dono paramparao ki vishesh artha (arth) aur uchit sutron ki saaf-safai ke saath pramanit vyakhya bhi de sakta hoon.