A soul and its mate
O humanity! Be mindful of your Lord, who created you from a single soul and from it formed its mate. Through both, He spread countless men and women.
4:1O mankind! Be careful of your duty to your Lord Who created you from a single soul and from it created its mate and from them twain hath spread abroad a multitude of men and women. Be careful of your duty toward Allah in Whom ye claim (your rights) of one another, and toward the wombs (that bare you). Lo! Allah hath been a watcher over you.