CC Madhya 20.168

mahiṣī-vivāhe haila bahu-vidha mūrti
‘prābhava prakāśa’ — ei śāstra-parasiddhi
Synonyms: 
mahiṣī-vivāhe — in the matter of marrying 16,108 wives at Dvārakā; haila — there were; bahu-vidha mūrti — many forms; prābhava prakāśa — called prābhava-prakāśa; ei — this; śāstra-parasiddhi — determined by reference to the revealed scriptures.
Translation: 
“When the Lord married 16,108 wives at Dvārakā, He expanded Himself into many forms. These expansions and the expansions at the rāsa dance are called prābhava-prakāśa, according to the directions of revealed scriptures.