SB 6.2.43

hitvā kalevaraṁ tīrthe
 gaṅgāyāṁ darśanād anu
sadyaḥ svarūpaṁ jagṛhe
hitvā — giving up; kalevaram — the material body; tīrthe — in the holy place; gaṅgāyām — on the bank of the Ganges; darśanāt anu — after seeing; sadyaḥ — immediately; sva-rūpam — his original spiritual form; jagṛhe — he assumed; bhagavat-pārśva-vartinām — which is fit for an associate of the Lord.
Upon seeing the Viṣṇudūtas, Ajāmila gave up his material body at Hardwar on the bank of the Ganges. He regained his original spiritual body, which was a body appropriate for an associate of the Lord.

The Lord says in Bhagavad-gītā (4.9):

janma karma ca me divyam
 evaṁ yo vetti tattvataḥ
tyaktvā dehaṁ punar janma
 naiti mām eti so ’rjuna

“One who knows the transcendental nature of My appearance and activities does not, upon leaving the body, take his birth again in this material world, but attains My eternal abode, O Arjuna.”

The result of perfection in Kṛṣṇa consciousness is that after giving up one’s material body, one is immediately transferred to the spiritual world in one’s original spiritual body to become an associate of the Supreme Personality of Godhead. Some devotees go to Vaikuṇṭhaloka, and others go to Goloka Vṛndāvana to become associates of Kṛṣṇa.