Shiva Purana
निशुंभशुंभनामानौ दैत्यौ दत्तवरौ मया ॥ दृप्तौ देवान्प्रबाधेते त्वत्तो लब्धस्तयोर्वधः ॥ ३६ ॥
Two Daityas, Śumbha and Niśumbha to whom I had granted boons have turned arrogant. They are harassing the gods. Their destruction is only through you.
english translation
nizuMbhazuMbhanAmAnau daityau dattavarau mayA ॥ dRptau devAnprabAdhete tvatto labdhastayorvadhaH ॥ 36 ॥
hk transliteration by Sanscript