(Are you putting the people to trial O Mu`adh! Was it not sufficient for you to recite As-Sama'i wat-Tariq, and Ash-Shamsi wa Duhaha, and something like them)
بِسْمِ اللَّهِ الرَّحْمَـنِ الرَّحِيمِ
In the Name of Allah, the Most Gracious, the Most Merciful.
Swearing by the Existence of Humanity surrounded by the Organized System of Allah
Allah swears by the heaven and what He has placed in it of radiant stars. Thus, He says,
خُلِقَ مِن مَّاءٍ دَافِقٍ ﴿6﴾ يَخْرُجُ مِن بَيْنِ الصُّلْبِ وَالتَّرَائِبِ (He is created of a spouting water
that comes out from between the loins and the chest-bones...86:6, 7). The general body of commentators have explained that the spouting water (sperm) comes out from the loins of men and the chest-bones of women. However, the research of embryological science on the subject shows that the seminal fluid comes out from every part of human body, and every part of the foetus is made of the seminal fluid that has come out from that part of the man's and woman's body. The brain, of course, plays the greatest role in this matter. Thus experience shows that people who indulge in excessive cohabitation mostly suffer from weakness of mental weakness. The embryologists have at the same time discovered that the seminal fluid separates from all parts of the body, and through the spinal cord, collects in the testes and from there it spouts.
A star shining upon a man is a symbolic reminder of the fact that an Observer is watching him. This Observer is recording man’s deeds. He will resurrect man after his death and take the reckoning of all his deeds. It is the period of respite (during which man is put to the test) which acts as a ‘wedge’ between man and the aforesaid event. As soon as the period of trial is over, he will face the consequences—from which he seems to be far away today.
Uthmani text of the Madinah mushaf (King Fahd Complex). Translation: Saheeh International. Tafsir via Quran.com.