Surah Al-Imran, ayah 6

هُوَ ٱلَّذِي يُصَوِّرُكُمۡ فِي ٱلۡأَرۡحَامِ كَيۡفَ يَشَآءُۚ لَآ إِلَٰهَ إِلَّا هُوَ ٱلۡعَزِيزُ ٱلۡحَكِيمُ ٦

Huwal-ladhī yusawwirukum fil-arhāmi kayfa yashā'u lā ilāha illā huwal-'azīzul-hakīm

It is He who forms you in the wombs however He wills. There is no deity except Him, the Exalted in Might, the Wise.