So harer nama, not other name, only harer nama. Yatha harer nama-padair udahrtaih. “Simply once chanting.” Uttamasloka-gunopalambhakam. The purification of chanting harer nama [Cc Adi 17.21] means as soon as you chant the holy name of Krsna, immediately you will see the form of Krsna, you will realize the qualities of Krsna, you will immediately remember the pastimes of Krsna. That is pure chanting of Hare Krsna mantra.
That is the commented by Srila Jiva Gosvami, that a pure devotee who chants Hare Krsna mantra, immediately all these — nama, rupa, guna, lila, parikara, vasistha… Simply by chanting name you will feel the form of Krsna: “Here is Krsna.” Nama, rupa, guna: “Here are the qualities. Oh, Krsna is so qualified. He is so kind. He is so magnanimous.” So many qualities you will remember. Nama, rupa, guna, lila: then His pastimes. “Oh, Krsna instructed Arjuna. Krsna played with His cowherd boys. Krsna had very nice talks with the gopis, with His mother, Yasoda.” These things will be remembered. That is factual perfection of chanting.
From Srila Prabhupada’s lecture on Srimad-Bhagavatam 6.2.11 — January 16, 1971, Allahabad