One verse

Srimad Bhagavatam 4.9.2

4.9.2

स वै धिया योगविपाकतीव्रया हृत्पद्मकोशे स्फुरितं तडित्प्रभम् । तिरोहितं सहसैवोपलक्ष्य बहि:स्थितं तदवस्थं ददर्श ॥ २ ॥

sa vai dhiya yoga-vipaka-tivraya hrt-padma-kose sphuritam tadit-prabham tirohitam sahasaivopalaksya bahih-sthitam tad-avastham dadarsa

sah
Dhruva Maharaja
vai
also
dhiya
by meditation
yoga-vipaka-tivraya
on account of mature realization of the yogic process
hrt
the heart
padma-kose
on the lotus of
sphuritam
manifested
tadit-prabham
brilliant like lightning
tirohitam
having disappeared
sahasa
all of a sudden
eva
also
upalaksya
by observing
bahih-sthitam
externally situated
tat-avastham
in the same posture
dadarsa
was able to see

The form of the Lord, which was brilliant like lightning and in which Dhruva Maharaja, in his mature yogic process, was fully absorbed in meditation, all of a sudden disappeared. Thus Dhruva was perturbed, and his meditation broke. But as soon as he opened his eyes he saw the Supreme Personality of Godhead personally present, just as he had been seeing the Lord in his heart.