Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 39-40
Sanskrit:
तथाप्यद्यतनान्यङ्ग शृणुष्व गदतो मम ।विज्ञापितो विरिञ्चेन पुराहं धर्मगुप्तये ।भूमेर्भारायमाणानामसुराणां क्षयाय च ॥ ३९ ॥अवतीर्णो यदुकुले गृह आनकदुन्दुभे: ।वदन्ति वासुदेवेति वसुदेवसुतं हि माम् ॥ ४० ॥
ITRANS:
tathāpy adyatanāny aṅgaśṛnuṣva gadato mamavijñāpito viriñcenapurāhaṁ dharma-guptaye
Translation:
Nonetheless, O friend, I will tell you about My current birth, name and activities. Kindly hear. Some time ago, Lord Brahmā requested Me to protect religious principles and destroy the demons who were burdening the earth. Thus I descended in the Yadu dynasty, in the home of Ānakadundubhi. Indeed, because I am the son of Vasudeva, people call Me Vāsudeva.