Harivamsha 13.20

13.20

tapaḥśarīrāḥ sarvās tās tisro yogabalānvitāḥ
sarvās tā vai mahābhāgāḥ sarvāś ca sthirayauvanāḥ |
tā lokamātaraś caiva brahmacāriṇya eva ca |
sarvāś ca brahmavādinyaḥ sarvāś caivordhvaretasaḥ //

All three have ascetic heat as their body, endowed with the power of yoga;
all of them are highly fortunate, and all possess enduring youth;
they are mothers of the worlds and chaste students,
all of them speakers of the brahman, and all of them celibate.