Matsya Purana 248.37

248.37

na te'ntaṃ tvadhigacchanti tenānantastvamucyase.
na kṣīyase na kṣarase kalpakoṭiśatairapi .. 248.38 ..

You assume white appearance during Satayuga, like champaka during Treta and red in Dwâpara, and black in Kaliyuga, and you get discoloured and pale in the evening of the yugas and the Dharmas also get pale. You are shining, you are walking, giving heat protecting trying, becoming angry, getting fame, illumining giving rains, laughing, remaining quiet, waking, and annihilating all the beings at the end of a yuga.—29-32 perity, etc., to all the beings, you are Ananta, for the Devas, Brahmâ, etc., and sages do not find your end.—35-38

You do not wane or perish, even in course of crores of Kalpas, consequently, you are called Akshaya Viṣṇu, you are Viṣṇu, for you pervade the universe, moveable and immoveable. You are omnipresent in the three Lokas in the immoveable objects, and the Yakshas, Gandharvas, serpents and the Universe rest in you, hence Brahmâ calls you Viṣṇu. The philosophers call the waters Nâra and you first reposed yourself in the Waters, therefore, you are called Nârâyaṇa. You revive at the end of every yuga the lost Vedas, that is why you are known by the Risis as Govinda. You are the master of the senses (Hṛiṣis), therefore, you are known as Hṛiṣî Keśa.—39 44