Shiva Purana
सर्वत्र ते प्रवेशोऽस्ति त्यक्त्वा वाराणसीं पुरीम् ॥ वाराणसीं यदा गच्छेत्तन्मुक्तां भव तत्क्षणात् ॥ ६५ ॥
You will have free access to everywhere except the city of Vārāṇasī. When she goes to Vārāṇasī you can be freed of her in a trice.
english translation
sarvatra te pravezo'sti tyaktvA vArANasIM purIm ॥ vArANasIM yadA gacchettanmuktAM bhava tatkSaNAt ॥ 65 ॥
hk transliteration by Sanscript