Mahabharata 5.100.9

पश्चिमा वारुणी दिक्च धार्यते वै सुभद्रयामहानुभावया नित्यं मातले विश्वरूपया

paścimā vāruṇī dikca dhāryate vai subhadrayāmahānubhāvayā nityaṃ mātale viśvarūpayā

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