Answer

Which Jain mantra would you like the full text of?

Common Jain mantras include:

• Navkar Mantra / Namokar Mantra
• Logassa Sutra
• Uvasaggaharam Stotra
• Bhaktamar Stotra
• Mangal Path
• Micchami Dukkadam

If you mean the Navkar Mantra, here it is:

णमो अरिहंताणं
णमो सिद्धाणं
णमो आयरियाणं
णमो उवज्झायाणं
णमो लोए सव्वसाहूणं
एसो पंच णमोक्कारो
सव्वपावप्पणासणो
मंगलाणं च सव्वेसिं
पढमं हवई मंगलं

Meaning

I bow to the Arihants.
I bow to the Siddhas.
I bow to the Acharyas.
I bow to the Upadhyays.
I bow to all Sadhus and Sadhvis in the world.

This fivefold bow destroys all sins and is the foremost among all auspicious things.