Ar-Rum 30:21
وَمِنْ ءَايَـٰتِهِۦٓ أَنْ خَلَقَ لَكُم مِّنْ أَنفُسِكُمْ أَزْوَٰجًا لِّتَسْكُنُوٓا۟ إِلَيْهَا وَجَعَلَ بَيْنَكُم مَّوَدَّةً وَرَحْمَةً ۚ إِنَّ فِى ذَٰلِكَ لَـَٔايَـٰتٍ لِّقَوْمٍ يَتَفَكَّرُونَ
Wamin ayatihi an khalaqa lakummin anfusikum azwajan litaskunoo ilayha wajaAAalabaynakum mawaddatan warahmatan inna fee thalika laayatinliqawmin yatafakkaroon
"And of His signs is that He created for you from yourselves mates that you may find tranquility in them; and He placed between you affection and mercy. Indeed in that are signs for a people who give thought."
Ar-Rum 30:21, translation by Sahih International
A short reflection
Among His signs is that He created for you mates so you may find tranquillity in them — and placed mercy between you.