In the context of Jain Samvatsari Pratikraman, the term "loga" refers to the recitation of the Logassa Sutra ("Logassa Ujjuyarē" – a prayer in praise of the 24 Tirthankaras). The Navkar Mantra (Namokar Mantra) is the most fundamental prayer in Jainism.

During the annual Samvatsari Pratikraman (especially in the Shwetambar tradition), there is a specific sequence of recitations. At one point, tradition prescribes the recitation of either:

• 40 Logassa Sutras

• 1008 Navkar Mantras

This is done as an act of atonement (prāyashchitta) or penitence.

So, 40 Logassa Sutras are considered equivalent to 1008 Navkar Mantras in the context of the Samvatsari Pratikraman ritual.

Reference:

• Jain Pratikraman Sutra Books (Shwetambar tradition)
• "Pratikraman Vidhi" by Pandit Dhirajlal Gandhi
• "Jainism: The World of Conquerors" by Natubhai Shah (p. 232)