Surah Ar-Ra'd (The Thunder), Verse 8

اَللّٰهُ یَعْلَمُ مَا تَحْمِلُ كُلُّ اُݥ وَمَا تَغِیْضُ الْاَرْحَامُ وَمَا تَزْدَادُ وَكُلُّ شَیْءٍ عِنْدَهٗ بِمِقْدَارٍ ۟

Allaahu ya'lamu maa tahmilu kullu unsaa wa maa tagheedul arhaamu wa maa tazdaad, wa kullu shai'in 'indahoo bimiqdaar

“Allah doth know what every female (womb) doth bear, by how much the wombs fall short (of their time or number) or do exceed. Every single thing is before His sight, in (due) proportion.”

Quran 13:8 (Yusuf Ali Translation)