When Prithu desired to cross the sea, the waters become solidified. The rivers also never rose when he had to cross them but remained perfectly calm. The standard on his car moved freely everywhere.
आपस्तस्तम्भिरे चास्य समुद्रमभियास्यतः। सरितश्चानुदीर्यन्त ध्वजभङ्गश्च नाभवत्॥