Mahabharata 13.17.140

स्वर्गद्वारं प्रजाद्वारं मोक्षद्वारं त्रिविष्टपम्निर्वाणं ह्लादनं चैव ब्रह्मलोकः परा गतिः

svargadvāraṃ prajādvāraṃ mokṣadvāraṃ triviṣṭapamnirvāṇaṃ hlādanaṃ caiva brahmalokaḥ parā gatiḥ

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