[1731] A phenomenon (dhamma) fixed in rightness (sammattaniyata) is a condition for an unfixed (aniyata) phenomenon by kamma condition (kamma-paccaya): conascent (sahajāta) and asynchronous (nānākhaṇika).
Conascent: volition (cetanā) fixed in rightness is a condition for mind-originated forms (cittasamuṭṭhāna-rūpa) by kamma condition.
Asynchronous: volition fixed in rightness is a condition for resultant (vipāka) aggregates by kamma condition.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.