CC Adi 4.11-12

nārāyaṇa, catur-vyūha, matsyādy-avatāra
yuga-manvantarāvatāra, yata āche āra
sabe āsi’ kṛṣṇa-aṅge haya avatīrṇa
aiche avatare kṛṣṇa bhagavān pūrṇa

nārāyaṇa—Lord Nārāyaṇa; catuḥ-vyūha—the four expansions; matsya-ādi—beginning with Matsya; avatāra—the incarnations; yuga-manv-antara-avatāra—the yuga and manv-antara incarnations; yata—as many as; āche—there are; āra—other; sabe—all; āsi’—coming; kṛṣṇa-aṅge—in the body of Lord Kṛṣṇa; haya—are; avatīrṇa—incarnated; aiche—in this way; avatare—incarnates; kṛṣṇa—Lord Kṛṣṇa; bhagavān—the Supreme Personality of Godhead; pūrṇa—full.

Lord Nārāyaṇa, the four primary expansions [Vāsudeva, Saṅkarṣaṇa, Pradyumna and Aniruddha], Matsya and the other līlā incarnations, the yuga-avatāras, the manv-antara incarnations and as many other incarnations as there are—all descend in the body of Lord Kṛṣṇa. In this way the complete Supreme Godhead, Lord Kṛṣṇa Himself, appears.