Srimad Bhagavatam Canto 10, Chapter 50, Text 57

SB 10.50.57

tatra yoga-prabhavena
 nitva sarva-janam harih
praja-palena ramena
 krsnah samanumantritah
nirjagama pura-dvarat
 padma-mali nirayudhah
 
Translation: 
 
After transporting all His subjects to the new city by the power of His mystic Yoga-maya, Lord Krsna consulted with Lord Balarama, who had remained in Mathura to protect it. Then, wearing a garland of lotuses but bearing no weapons, Lord Krsna went out of Mathura by its main gate.
 
Purport: 
 
Srila Visvanatha Cakravarti quotes the following verses from Sri Padma Purana, Uttara-khanda, to describe how Lord Krsna transferred the citizens from Mathura to Dvaraka:
 
susuptan mathurayan tu
 paurams tatra janardanah
uddhrtya sahasa ratrau
 dvarakayam nyavesayat
 
prabuddhas te janah sarve
 putra-dara-samanvitah
haima-harmya-tale vista
 vismayam paramam yayuh
 
“In the middle of the night, as the citizens of Mathura slept, Lord Janardana suddenly removed them from that city and placed them in Dvaraka. When the men awoke, they were all amazed to find themselves, their children and their wives sitting inside palaces made of gold.”
 
Thus end the purports of the humble servants of His Divine Grace A.C. Bhaktivedanta Swami Prabhupada to the Tenth Canto, Fiftieth Chapter, of the Srimad-Bhagavatam, entitled “Krsna Establishes the City of Dvaraka.”
Srimad Bhagavatam Canto 10, Chapter 50, Text 56
Srimad Bhagavatam Canto 10, Chapter 50 Narration