Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 21
Sanskrit:
बहुरूपैकरूपं तद् दृश्यते न च दृश्यते ।मायामयं मयकृतं दुर्विभाव्यं परैरभूत् ॥ २१ ॥
ITRANS:
bahu-rūpaika-rūpaṁ taddṛśyate na ca dṛśyatemāyā-mayaṁ maya-kṛtaṁdurvibhāvyaṁ parair abhūt
Translation:
At one moment the magic airship built by Maya Dānava appeared in many identical forms, and the next moment it was again only one. Sometimes it was visible, and sometimes not. Thus Śālva’s opponents could never be sure where it was.