CC Madhya 20.250
seita puruṣa haya trividha prakāra
“In the beginning, Kṛṣṇa incarnates Himself as the puruṣa-avatāras, or Viṣṇu incarnations. These are of three types.
Up to this verse, the many types of expansions have been described. Now the manifestations of the Lord’s different potencies will be described.