Certainly! In Jainism, there are several respected texts (granths) in Gujarati that focus on the doctrine of karma. Some of the best-known and widely studied karma granths in Gujarati are:

1. Karma Granth (કર્મ ગ્રંથ) by Pandit Sukhlalji Sanghvi

This is a detailed and scholarly commentary on the Jain karma theory, available in Gujarati and highly respected among Jain scholars.

1. Karma Vipak Granth (કર્મ વિપાક ગ્રંથ)

This granth explains the consequences and fruition of karmas in detail, often studied in Gujarati Jain communities.

1. Shri Kundkundacharya's Samaysar Karma Kanda (સમયસાર કર્મ કાંડ)

The Karma Kanda (section on karma) of the Samaysar is available in Gujarati translations and commentaries, and is considered a core text for understanding karma in Jainism.

1. Gommatsar Karma Kanda (ગોમ્મટસાર કર્મકાંડ) by Acharya Nemichandra

This text is a classic, and Gujarati translations/commentaries are commonly used for in-depth study.

You can find these granths at Jain libraries, Jain temples, and online Jain book portals. They are often available in both Gujarati script and modern Gujarati language for easier understanding.

If you want a specific recommendation for beginners, "Karma Vignan" (કર્મ વિજ્ઞાન) by Shri Champaklal Shah or by Pandit Dalsukhbhai Malvania are also popular introductory books in Gujarati.

Let me know if you need more details or sources to obtain these granths.