Sura al-Aʿrāf 7:189

هُوَ ٱلَّذِى خَلَقَكُم مِّن نَّفْسٍ وَٰحِدَةٍ وَجَعَلَ مِنْهَا زَوْجَهَا لِيَسْكُنَ إِلَيْهَا فَلَمَّا تَغَشَّىٰهَا حَمَلَتْ حَمْلًا خَفِيفًا فَمَرَّتْ بِهِۦ فَلَمَّآ أَثْقَلَت دَّعَوَا ٱللَّـهَ رَبَّهُمَا لَئِنْ ءَاتَيْتَنَا صَٰلِحًا لَّنَكُونَنَّ مِنَ ٱلشَّٰكِرِينَ

huwa alladhī khalaqakum min nafsin wāḥidatin wa-jaʿala minhā zawjahā li-yaskuna ilayhā fa-lammā taghashshahā ḥamalat ḥamlan khafīfan fa-marrat bihi fa-lammā athqalat ddaʿawā allāha rabbahumā lain ātaytanā ṣāliḥan llanakūnanna mina l-shākirīna

It is He Who created you from a single person, and made his mate of like nature, in order that he might dwell with her (in love). When they are united, she bears a light burden and carries it about (unnoticed). When she grows heavy, they both pray to Allah their Lord, (saying): "If Thou givest us a goodly child, we vow we shall (ever) be grateful."