Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 15
Sanskrit:
स याचित: सुरगणैरिन्द्राद्यैरात्मरक्षणे ।असुरेभ्य: परित्रस्तैस्तद्रक्षां सोऽकरोच्चिरम् ॥ १५ ॥
ITRANS:
sa yācitaḥ sura-gaṇairindrādyair ātma-rakṣaṇeasurebhyaḥ paritrastaistad-rakṣāṁ so ’karoc ciram
Translation:
Begged by Indra and the other demigods to help protect them when they were terrorized by the demons, Mucukunda defended them for a long time.