what are the 15 karma bhumis
Here are the 15 karma-bhūmī (sub-classes of body-making karma) as described in the Jain text Gommatasara Karma-Kanda:
1) Audārika-śarīra with itself (physical-physical) 2) Audārika-śarīra with taijasa-śarīra (physical-electric) 3) Audārika-śarīra with kārmaṇa (physical-karmic) 4) Vaikriya-śarīra with itself (vaikriya-physical with physical) 5) Vaikriya-śarīra with taijasa-śarīra (vaikriya-electric) 6) Vaikriya-śarīra with kārmaṇa (vaikriya-karma) 7) Āhāraka-śarīra with itself (āhāraka-physical) 8) Āhāraka-śarīra with taijasa-śarīra (āhāraka-electric) 9) Āhāraka-śarīra with kārmaṇa (āhāraka-karma) 10) Āhāraka-śarīra with taijasa-śarīra and kārmaṇa (āhāraka-electric-karma) 11) Audārika-śarīra with taijasa-śarīra and kārmaṇa (physical-electric-karma) 12) Vaikriya-śarīra with taijasa-śarīra and kārmaṇa (vaikriya-electric-karma) 13) Taijasa-śarīra with itself (electric-electric) 14) Taijasa-śarīra with kārmaṇa (electric-karma) 15) Kārmā-śarīra with itself (karma-karma)
These 15 are the sub-classes used to explain how different body-making karmas combine to form the various bodies of a jiva. They come from the scholarly discussion on karmic bondage in Jain doctrine.
Note: In Jain tradition, the core ideas of karma-bhūmī are consistent across Digambar and Śvetāmbara sources; there isn’t a separate, alternative list for these fifteen names in the mainstream here.