Ma'arif al-Qur'an
Mufti Muhammad Shafiوَبَرًّا بِوَالِدَتِي"and (He has made me) good to my mother." - 19:32.
Here only the mother is mentioned and not both the parents. Hence it is implied that his birth was a miracle, being without a father. Such adiscourse coming from an infant was a miracle by itself to prove his miraculous birth.