CC Ādi 1.75

anekatra prakaṭatā
rūpasyaikasya yaikadā
sarvathā tat-svarūpaiva
sa prakāśa itīryate
Synonyms: 
anekatra — in many places; prakaṭatā — the manifestation; rūpasya — of form; ekasya — one; — which; ekadā — at one time; sarvathā — in every respect; tat — His; sva-rūpa — own form; eva — certainly; saḥ — that; prakāśaḥ — manifestive form; iti — thus; īryate — it is called.
Translation: 
“If numerous forms, all equal in their features, are displayed simultaneously, such forms are called prakāśa-vigrahas of the Lord.”
Purport: 

This is a quotation from the Laghu-bhāgavatāmṛta (1.21), compiled by Śrīla Rūpa Gosvāmī.