يُقَلِّبُ اللَّهُ الَّيْلَ وَالنَّهَارَ إِنَّ فِى ذلِكَ لَعِبْرَةً لأُوْلِى الاٌّبْصَـرِ
Allah alternates the night and the day. Indeed in that is a lesson for those who have vision.
اور اللہ ہی رات اور دن کو بدلتا رہتا ہے۔ اہل بصارت کے لئے اس میں بڑی عبرت ہے
(Surah An-Nur: 44)
The phenomenon of day and night is described beautifully in Quran, and has been mentioned who will be able to get lesson from it. It shows that succession of day and night requires to ponder upon, and secondly these are the signs of Allah subhana’watalah, that how Great is the Lord, may He be exalted.
The word يُقَلِّبُ is from the root word ق ل ب , it means to flip, alternate or change something from one condition to another, or a thing change from one state to another. It is used as verb in this ayah, that Allah alternates or Allah causes the day and night to succeed each other. The word قلب also used in Quran for heart, because state of heart is also different at different times in different circumstances. It is the complete change, so when day comes, the darkness of night completely remove. And as the night comes, it covers up the whole brightness with darkness. This shift of day and night doesn’t happen accidently, there is a power behind it, which is alternating it. Allah is the One Who is controlling that by His Command, Power, Might and Knowledge. So that He takes something from the length of one and adds it to the other, which is short, until they become equal, then He does the opposite so that the one which was short becomes long and vice versa.
The word نَھَر is the opposite of word لَیل , the day time begins from the sunrise and ends with sunset. It is divided into 12 hours. While a whole day is of 24 hours, starts from the sunset and ends at the sunset of next day. Time and age are calculated with the days.
As per science, the Earth takes 24 hours to make one complete turn. We have day and night because the Earth rotates. It spins on its axis, which is an imaginary line passing through the North and South Poles. The Earth spins slowly all the time, but we don’t feel any movement because it turns smoothly and at the same speed.
The changing lengths of days and nights depends on your location on Earth and the time of year. Ultimately, these fluctuations are due to the tilt of the Earth’s axis and its path around the sun.
Lesson in alteration of Day and Night:
It is understood that day and night are made with purpose. Constant shining of sun increases temperature of the air, bums living creatures, and mentally wearies the men, but when the darkness of night comes after this shining, it alters it totally. Allah reminds us of the great signs that He created, including the alternation of the night and day, so that people may rest at night, and go out and earn a living, do their work, and travel during the day, and so that they may know the number of days, weeks, months and years, so they will know the appointed times for paying debts, doing acts of worship, dealing with transactions and so on.
إِنَّ فِى ذلِكَ لَعِبْرَةً لأُوْلِى الاٌّبْصَر
The gradual changes of day and night, which is the factor of formation of four seasons, play an important role in the growth of plants, the life of all living creatures, the descending of rain, and storing water in the ground. The sun is also sign of day and moon is the sign of night.
Then in the 2nd part Allah subhana’watalah said, these signs are for those who have sight. It points to the sight of heart, eman (faith) not to the eyes. These are proofs of Tawhid for the people of understanding, sound comprehension and vision. They contemplate about Allah’s wisdom, decisions and decree, that nothing is made useless or randomly.
May Allah subhana’watalah bless us with bright vision, sound understanding of deen and true emaan that we obey His decree and wisdom Ameen.