Shiva Purana
तत्रापि मम ते पुत्रा भविष्यंति सुधार्मिकाः ॥ भल्लवी मधुपिंगश्च श्वेतकेतुस्तथैव च ॥ ३२ ॥
There too my sons will be virtuous viz. Bhallava, Madhu, Piṅga and Śvetaketu.
english translation
tatrApi mama te putrA bhaviSyaMti sudhArmikAH ॥ bhallavI madhupiMgazca zvetaketustathaiva ca ॥ 32 ॥
hk transliteration by Sanscript