Answer

Navkarsi ke baad paani peete waqt aam taur par Navkar Mantra bola jata hai. Jain parampara me paani peene se pehle Navkar ka smaran karna mahatvapurn mana jata hai. ( jainknowledge.com)

Mantra

णमो अरिहंताणं णमो सिद्धाणं णमो आयरियाणं णमो उवज्झायाणं णमो लोए सव्वसाहूणं ( jainknowledge.com)

Explanation

Iska bhav hai ki paani lene se pehle man ko shuddh karke Arihant, Siddha, Acharya, Upadhyay aur sabhi sadhuon ko namaskar kiya jaye. Agar kabhi bhool se Navkar bole bina paani pi liya ho, to Jain tradition me pashchatap karke agle samay dhyan rakhne ko kaha jata hai. ( jainknowledge.com)

Takeaway

Simple bhav yeh hai: paani peene se pehle Navkar Mantra yaad kijiye aur shraddha se pijiye. ( jainknowledge.com)