The Holy Quran 30:21 — Surah Ar-Rum
Arabic text
وَمِنْ ءَايَـٰتِهِۦٓ أَنْ خَلَقَ لَكُم مِّنْ أَنفُسِكُمْ أَزْوَٰجًا لِّتَسْكُنُوٓا۟ إِلَيْهَا وَجَعَلَ بَيْنَكُم مَّوَدَّةً وَرَحْمَةً ۚ إِنَّ فِى ذَٰلِكَ لَـَٔايَـٰتٍ لِّقَوْمٍ يَتَفَكَّرُونَ
Translation
Also among His Aayaat is that He has created spouses for you from yourselves (from your own species) so that you may find solace (peace and rest) with her and He has placed (tremendous) love (most manifest during youth) and (a great deal of) mercy (most manifest during old age) between you. There are certainly Aayaat in this for people who contemplate (people who have insight).
Tafsir (excerpt) — Tafsir Usmani
The wisdom of creating man and woman: that is, first He created one Adam from dust, then from within him He brought forth his mate, so that he might find comfort and repose in her, and by nature He placed between the two sexes (man and woman) a special kind of love and affection, so that the purpose of marriage might be achieved.
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