Lesson #14 : Ref Shlokas : SU 5.9
Śvetāśvatara Upaniṣad (5.9)
SIZE OF SOUL
The Śvetāśvatara Upaniṣad (5.9) confirms this:
bālāgra-śata-bhāgasya
śatadhā kalpitasya ca
bhāgo jīvaḥ sa vijñeyaḥ
sa cānantyāya kalpate
“When the upper point of a hair is divided into one hundred parts and again each of such parts is further divided into one hundred parts, each such part is the measurement of the dimension of the spirit soul.”