Srimad-Bhagavatam: Canto 9 - Chapter 1 - Verse 12
Sanskrit:
दन्ता जाता यजस्वेति स प्रत्याहाथ सोऽब्रवीत् ।यदा पतन्त्यस्य दन्ता अथ मेध्यो भवेदिति ॥ १२ ॥
ITRANS:
dantā jātā yajasvetisa pratyāhātha so ’bravītyadā patanty asya dantāatha medhyo bhaved iti
Translation:
When the teeth grew, Varuṇa came and said to Hariścandra, “Now the animal has grown teeth, and you can perform the sacrifice.” Hariścandra replied, “When all its teeth have fallen out, then it will be fit for sacrifice.”