One verse

Srimad Bhagavatam 4.12.33

4.12.33

इति व्यवसितं तस्य व्यवसाय सुरोत्तमौ । दर्शयामासतुर्देवीं पुरो यानेन गच्छतीम् ॥ ३३ ॥

iti vyavasitam tasya vyavasaya surottamau darsayam asatur devim puro yanena gacchatim

iti
thus
vyavasitam
contemplation
tasya
of Dhruva
vyavasaya
understanding
sura-uttamau
the two chief associates
darsayam asatuh
showed (to him)
devim
exalted Suniti
purah
before
yanena
by airplane
gacchatim
going forward.

The great associates of Vaikunthaloka, Nanda and Sunanda, could understand the mind of Dhruva Maharaja, and thus they showed him that his mother, Suniti, was going forward in another plane.