RV 7.50.4
याः प्रवतो निवत उद्वत उदन्वतीर् अनुदकाश् च याः । ता अस्मभ्यम् पयसा पिन्वमानाः शिवा देवीर् अशिपदा भवन्तु सर्वा नद्यो अशिमिदा भवन्तु ॥
yāḥ pravato nivata udvata udanvatīr anudakāś ca yāḥ | tā asmabhyam payasā pinvamānāḥ śivā devīr aśipadā bhavantu sarvā nadyo aśimidā bhavantu ||
Devanagari rendered by HREEM from the edition's roman (IAST) text; the IAST is the edition's own.
The steep declivities, the valleys, and the heights, the channels full of water, and the waterless- May those who swell with water, gracious Goddesses, never afflict us with the Sipada disease, may all the rivers keep us free from Simida.
Translated by Ralph T. H. Griffith (1896)