SB 11.31.24

nityaṁ sannihitas tatra
 bhagavān madhusūdanaḥ
smṛtyāśeṣāśubha-haraṁ
 sarva-maṅgala-maṅgalam
Word for word: 
nityam — eternally; sannihitaḥ — present; tatra — there; bhagavān — the Supreme Personality of Godhead; madhusūdanaḥ — Madhusūdana; smṛtyā — by remembrance; aśeṣa-aśubha — of everything inauspicious; haram — which takes away; sarva-maṅgala — of all auspicious things; maṅgalam — the most auspicious.
Translation: 
Lord Madhusūdana, the Supreme Personality of Godhead, is eternally present in Dvārakā. It is the most auspicious of all auspicious places, and merely remembering it destroys all contamination.