Short answer

• In Pratikraman, Kausagga (kāyotsarga) is the phase of stillness and inner contemplation on the 24 Tirthankars and the Siddhas.
• The Logassa (Chaturvimsati-stava) has seven gāthās, and its canonical completion is the last stanza ending with “chandesu nimmalayara.” That stanza is the phalāśruti: it prays for samādhi and spiritual progress, which matches the very aim of Kausagga.
• Therefore, during Kausagga we recite Logassa only up to “chandesu nimmalayara” and conclude there. Beyond this there is no further part of the Logassa; the Kausagga then ends and the next avashyaka proceeds.

Meaning of the closing line (simple) “Chandesu nimmalayara … siddhā siddhiṁ mama disantu” = “O Siddhas, pure among the celestials, profound like the ocean, kindly bestow (guide me to) perfection.” This is why it forms the natural end-point during Kausagga.

Tradition note

• Śvetāmbara Pratikraman paddhatis prescribe reciting the full seven gāthās of Logassa in Kausagga, concluding at “chandesu nimmalayara.”
• Digambara paddhati differs in order/texts used for their avashyakas; the above practice pertains to Śvetāmbara tradition.

For text and easy reference

• Logassa (text and simple meaning):
• Pratikraman sutras overview: