Valmiki Ramayana 2.91.8
वाजिमुख्या मनुष्याश्च मत्ताश्च वरवारणा: ।प्रच्छाद्य भगवन् भूमिं महतीमनुयान्ति माम्॥
vājimukhyā manuṣyāśca mattāśca varavāraṇā: |pracchādya bhagavan bhūmiṃ mahatīmanuyānti mām ||
Our plain-language meaning of this verse is waiting for scholar review.