ता आप ऐक्षन्त बह्व्यः स्याम प्रजाये-महीति ता अन्नमसृजन्त तस्माद्यत्र क्व चवर्षति तदेव भूयिष्ठमन्नं भवत्यद्भ्य एवतदध्यन्नाद्यं जायते ॥ ४ ॥
In plain words
Those waters reflected: 'Let us become many, let us multiply.' And so they manifested food. Therefore, wherever rain falls, food grows in abundance; from water alone is nourishment brought forth.
Close to the Sanskrit
Those waters reflected, 'May we be many, may we propagate'; those waters emitted food. Therefore wherever it rains, that indeed becomes most abundant food; from water indeed that edible food is born.