Mahabharata 13.27.39

तिष्ठेद्युगसहस्रं तु पादेनैकेन यः पुमान्मासमेकं तु गङ्गायां समौ स्यातां न वा समौ

tiṣṭhedyugasahasraṃ tu pādenaikena yaḥ pumānmāsamekaṃ tu gaṅgāyāṃ samau syātāṃ na vā samau

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