Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 14
Sanskrit:
क्व सप्तहायनो बाल: क्व महाद्रिविधारणम् । ततो नो जायते शङ्का व्रजनाथ तवात्मजे ॥ १४ ॥
ITRANS:
kva sapta-hāyano bālaḥkva mahādri-vidhāraṇamtato no jāyate śaṅkāvraja-nātha tavātmaje
Translation:
On the one hand this boy is only seven years old, and on the other we see that He has lifted the great hill Govardhana. Therefore, O King of Vraja, a doubt about your son arises within us.