Srimad-Bhagavatam: Canto 9 - Chapter 1 - Verse 20
Sanskrit:
एतत् सङ्कल्पवैषम्यं होतुस्ते व्यभिचारत: ।तथापि साधयिष्ये ते सुप्रजास्त्वं स्वतेजसा ॥ २० ॥
ITRANS:
etat saṅkalpa-vaiṣamyaṁhotus te vyabhicārataḥtathāpi sādhayiṣye tesuprajāstvaṁ sva-tejasā
Translation:
This discrepancy in the objective is due to your priest’s deviation from the original purpose. However, by my own prowess I shall give you a good son.