Atharvavedaparishishta 65.1.7

65.1.7

udayāstamaye meghā garbhabhūtā divākare | pradīptā iva citrāsu viṣamāsu khakoṭiṣu ||

clouds appearing as embryos at sunrise or sunset while the sun shines, / as if blazing on the manifold, uneven points of the sky;