Shiva Purana
शुंभस्सह निशुंभेन प्रापितो मरणं रणे ॥ श्रुतं च महदाख्यानं स्कान्दे स्कन्दसमाश्रयम् ॥ २९ ॥
Śumbha along with Niśumbha died in battle I have heard a great story about Skanda in the Skanda.
english translation
zuMbhassaha nizuMbhena prApito maraNaM raNe ॥ zrutaM ca mahadAkhyAnaM skAnde skandasamAzrayam ॥ 29 ॥
hk transliteration by Sanscript