During hernia surgery, the most commonly recited Jain mantra is the Navkar Mantra. If you specifically want a Bhaktamar shlok, then the first shlok of Bhaktamar Stotra is traditionally recited with deep faith and devotion.

Simple guidance:

• Best and most universal: Navkar Mantra
• For Bhaktamar: Pratham shlok of Bhaktamar Stotra

If possible, recite silently in the mind or have a family member recite it with shraddha during the operation. In Jain Dharma, the main emphasis is on bhavna, shuddh bhakti, and calm faith rather than any fixed guarantee of outcome.

For surgery, also pray:

• for peace
• for recovery
• for less pain
• for doctor’s success
• for no harm to any living being

Most important Jain prayer during surgery: Namo Arihantanam, Namo Siddhanam, Namo Ayariyanam, Namo Uvajjhayanam, Namo Loe Savva-Sahunam.

If you want, I can also give you:

• the first Bhaktamar shlok
• a short healing prayer in Jain style
• or a Gujarati/Hindi version for surgery time