Mahabharata 3.81.87

तत्र विष्णुपदे स्नात्वा अर्चयित्वा च वामनम्सर्वपापविशुद्धात्मा विष्णुलोकमवाप्नुयात्

tatra viṣṇupade snātvā arcayitvā ca vāmanamsarvapāpaviśuddhātmā viṣṇulokamavāpnuyāt

Our plain-language meaning of this verse is waiting for scholar review.