“The Supreme personality of Godhead, Krishna, appears in various expansions, as stated in the Brahmasamhita (5.39):
ramadi-murtisu kala-niyamena tisthan nanavataram akarod bhuvanesu kintu
Krishnah svayam samabhavat paramah puman yo govindam adi-purusam tam aham bhajami
“”I worship the Supreme Personality of Godhead, Govinda, who is always situated in various incarnations such as Rama, Nrsimha and many subincarnations as well, but who is the original personality of Godhead known as Krishna and who incarnates personally also.”” Krishna, who is Vishnu-tattva, has expanded Himself in many Vishnu forms, of which Lord Ramacandra is one. We know that the Vishnutattva is carried by the transcendental bird Garuda and is equipped with different types of weapons in four hands. Therefore we may doubt whether Lord Ramacandra could be in the same category, since He was carried by Hanuman, not by Garuda, and had neither four hands nor the sankha, cakra, gada and padma. Consequently this verse clarifies that Ramacandra is as good as Krishna (ramadi-murtisu kala). Although Krishna is the original Supreme personality of Godhead, Ramacandra is not different from Him. Ramacandra is unaffected by the modes of material nature, and therefore He is prasanta, never disturbed by those modes.
Source: A.C. Bhaktivedanta Swami Prabhupada (2014 edition), “Srimad Bhagavatam”, Fifth Canto, Chapter 19 – Text 4