In Jainism, Pratikraman is a spiritual practice involving reflection, repentance, and renewal, typically performed daily, fortnightly, or during special occasions. During Pratikraman, several sutras (scriptures or recitations) are recited in a prescribed order. The term "Sthapana Sutra" usually refers to the verses that invoke and establish the presence of Tirthankaras, Siddhas, and other revered beings at the start of Pratikraman.

A commonly recited Sthapana Sutra at the beginning of Pratikraman is:

Namo Arihantanam Namo Siddhanam Namo Ayariyanam Namo Uvajjhayanam Namo Loe Savva Sahunam

This is the Namokar Mantra, the most fundamental Jain prayer, bowing to the five supreme beings. In addition, there may be specific verses in some traditions (especially among the Shwetambar sect) that enumerate and invite the various Tirthankaras and other spiritual entities. For example:

Arihantā Sthapitam, Siddhā Sthapitam, Āyariyā Sthapitam, Uvajjhāyā Sthapitam, Sāhu Sthapitam, Kevali-Pannattaṁ Dhammam Sthapitam...

These lines mean: "I establish the (presence of) Arihantas, Siddhas, Acharyas, Upadhyayas, Sadhus, and the Dharma preached by the Kevalis (omniscients)."

Summary:

• The Sthapana Sutra is recited at the beginning of Pratikraman to symbolically invite and establish the presence of the Panch Parmesthi and other spiritual entities.
• Its core is the Namokar Mantra, and it may be followed by specific lines like "Arihantā Sthapitam..." as per tradition.

If you want the full traditional text as recited in Shwetambar or Digambar Pratikraman, please specify your sect or tradition for the exact wording.