One verse

Srimad Bhagavatam 2.9.24

2.9.24

सृजामि तपसैवेदं ग्रसामि तपसा पुन: । बिभर्मि तपसा विश्वं वीर्यं मे दुश्चरं तप: ॥ २४ ॥

srjami tapasaivedam grasami tapasa punah bibharmi tapasa visvam viryam me duscaram tapah

srjami
I create
tapasa
by the same energy of penance
eva
certainly
idam
this
grasami tapasa
I do withdraw also by the same energy
punah
again
bibharmi
do maintain
tapasa
by penance
visvam
the cosmos
viryam
potency
me
My
duscaram
severe
tapah
penance.

I create this cosmos by such penance, I maintain it by the same energy, and I withdraw it all by the same energy. Therefore the potential power is penance only.