For a complete Jain view of karma, the best single text is the Tattvartha Sutra by Acharya Umāsvāti. It has a full, systematic treatment of karma—how it inflows (asrava), binds, and how it can be stopped and shed (nirjara), leading to moksha. This work is revered by both Śvetāmbara and Digambara traditions, though each tradition/commentary may emphasize different aspects. You can read about its karma chapters and essential ideas here. ( jainknowledge.com)

If you want deeper, specialized karmic treatises (granth) in Jain literature, consider:

• Karma Kanda of Samaysāra (Kundakunda): practical exposition on how karma attaches to the soul and how it is shed. This is often studied alongside Samayasara for its practical path to liberation. ( jainknowledge.com)
• Kasāyapahūdā (Kasayapahuda): an early Digambara text focusing on passions (kasaya) and their karmic consequences. ( en.wikipedia.org)
• Karma Siddhānta (Hindi/Sanskrit): a classic treatise by Jinendra Varni offering systematic insights into karma doctrine. ( jainebooks.org)

Gujarati readers commonly study:

• Karma Granth (Karma Granth) by Pandit Sukhlalji Sanghvi, a respected Gujarati karma-focused granth. ( jainknowledge.com)
• Karma Vipak Granth (Gujarati) and Gommatsara Karma Kanda (Gujarati translations/comments) are also widely used in communities in Gujarat. ( jainknowledge.com)

If you’d like, I can point you to a JainKnowledge.com page that matches your preferred language or tradition and summarize the key karma concepts from that text.