Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 22
Sanskrit:
क्वचिद्भूमौ क्वचिद् व्योम्नि गिरिमूर्ध्नि जले क्वचित् ।अलातचक्रवद् भ्राम्यत् सौभं तद् दुरवस्थितम् ॥ २२ ॥
ITRANS:
kvacid bhūmau kvacid vyomnigiri-mūrdhni jale kvacitalāta-cakra-vad bhrāmyatsaubhaṁ tad duravasthitam
Translation:
From one moment to the next the Saubha airship appeared on the earth, in the sky, on a mountain peak or in the water. Like a whirling, flaming baton, it never remained in any one place.