Mahabharata 12.124.16

एकरात्रेण मान्धाता त्र्यहेण जनमेजयःसप्तरात्रेण नाभागः पृथिवीं प्रतिपेदिवान्

ekarātreṇa māndhātā tryaheṇa janamejayaḥsaptarātreṇa nābhāgaḥ pṛthivīṃ pratipedivān

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