SB 12.7.15

manvantaraṁ manur devā
 manu-putrāḥ sureśvarāḥ
ṛṣayo ’ṁśāvatārāś ca
 hareḥ ṣaḍ-vidham ucyate
Synonyms: 
manu-antaram — the reign of each Manu; manuḥ — the Manu; devāḥ — the demigods; manu-putrāḥ — the sons of Manu; sura-īśvarāḥ — the different Indras; ṛṣayaḥ — the chief sages; aṁśa-avatārāḥ — the incarnations of portions of the Supreme Lord; ca — and; hareḥ — of Lord Hari; ṣaṭ-vidham — sixfold; ucyate — is said.
Translation: 
In each reign of Manu, six types of personalities appear as manifestations of Lord Hari: the ruling Manu, the chief demigods, the sons of Manu, Indra, the great sages and the partial incarnations of the Supreme Personality of Godhead.