A type of Noāgamataḥ Jñaśarīra-bhavyaśartra-vyatirikta Dravyanikṣepa;
that Jīva (living being) whose form of life in the next birth has already been ascertained but lifespan Karma is still not bound; such Jīva is called Ekabhavika (i.e. the Jīva with destined future birth) in present birth.
yo jīvo mṛtvā'nantarabhave śaṅkheṣu utpatsyate sa teṣvabaddhāyuṣko'pi janmadinādārabhya ekabhavikaḥ sa śaṅkha ucyate.
(Anu 568 MaVṛ Pa 213)