A kind of vīryalabdhi (attainment of Vīrya (spiritual energy); the power obtained through the Kṣayopaśama (annihilation-cum-subsidence) of Cāritramoha (conduct-deluding) Karma and Vīryāntarāya (Karma, obstructing the spiritual energy);
the self-exertion of an ascetic infused with the self-restraint.
(Bhaga 8.145)
See - Bālavīrya.