Srimad-Bhagavatam: Canto 12 - Chapter 1 - Verse 15
Sanskrit:
मन्वन्तरं मनुर्देवा मनुपुत्रा: सुरेश्वरा: ।ऋषयोऽशांवताराश्च हरे: षड्विधमुच्यते ॥ १५ ॥
ITRANS:
manvantaraṁ manur devāmanu-putrāḥ sureśvarāḥṛṣayo ’ṁśāvatārāś cahareḥ ṣaḍ-vidham ucyate
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.