وَمِن كُلِّ شَىْءٍ خَلَقْنَا زَوْجَيْنِ لَعَلَّكُمْ تَذَكَّرُونَ
Wa min kulli shai'in khalaqnaa zawjaini la'allakum tazakkaroon
and We created pairs of all things so that you [people] might take note.
And of everything we created pairs, so that you might reflect.