In The Name of Allah, The Most Merciful, The Bestower of Mercy.

Seas and Rivers, Marine Nourishment, Night and Day, Sun and Moon: Reflections on Divine Wisdom

Allah, The Most High, said:

وَمَا يَسۡتَوِى ٱلۡبَحۡرَانِ هَـٰذَا عَذۡبٌ۬ فُرَاتٌ۬ سَآٮِٕغٌ۬ شَرَابُهُ ۥ وَهَـٰذَا مِلۡحٌ أُجَاجٌ۬ۖ وَمِن كُلٍّ۬ تَأۡڪُلُونَ لَحۡمً۬ا طَرِيًّ۬ا وَتَسۡتَخۡرِجُونَ حِلۡيَةً۬ تَلۡبَسُونَهَاۖ وَتَرَى ٱلۡفُلۡكَ فِيهِ مَوَاخِرَ لِتَبۡتَغُواْ مِن فَضۡلِهِۦ وَلَعَلَّكُمۡ تَشۡڪُرُونَ

And the two seas (kinds of water) are not alike: this fresh and pleasant to drink, and that saltish and bitter. And from them both you eat fresh tender meat, and derive the ornaments that you wear. And you see the ships cleaving, that you may seek of His Bounty, and that you may give thanks.
[Fatir. 12]

On the Creation of the Two Seas

This is report (news) about Allah’s Might, Wisdom, and Mercy, that indeed, He made the two seas as a source of welfare for all creatures of the earth, but He did not make them the same.

• Rivers are fresh and pleasant to drink, so that those who drink from them, and those who sow and grow crops, would benefit.

• Seas are salty and bitter, so that the air (or atmosphere) is not defiled by the stench of dead animals. The saltiness preserves the sea, keeping its animals in a better state and more tasty.

This is why Allah said:

• [وَمِن كُلٍّ۬ – And from them both] — Meaning, from both the salty sea and fresh river water.

• [تَأۡڪُلُونَ لَحۡمً۬ا طَرِيًّ۬ا – you eat fresh tender meat] — Meaning, fish which is easy to catch.

• [وَتَسۡتَخۡرِجُونَ حِلۡيَةً۬ تَلۡبَسُونَهَاۖ – and derive the ornaments that you wear] — Meaning, such as pearls, coral, and others found in the sea.

These are great sources of welfare for the people.

On Ships and Marine Travel

Also among these sources of welfare and useful things in the sea is that Allah has subjugated it to the people to carry the vessels, such as ships and other means of marine transportation. You see them traversing the sea and cleaving – travelling from one region to another, from one place to another place, carrying passengers, their belongings and merchandise. Thus, by this, they receive a lot from Allah’s bounty and kindness. This is why Allah stated:

لِتَبۡتَغُواْ مِن فَضۡلِهِۦ وَلَعَلَّكُمۡ تَشۡڪُرُونَ

“That you may seek of His Bounty, and that you may give thanks.”

On the Sun, Moon, Day, and Night

Allah said:

يُولِجُ ٱلَّيۡلَ فِى ٱلنَّهَارِ وَيُولِجُ ٱلنَّهَارَ فِى ٱلَّيۡلِ وَسَخَّرَ ٱلشَّمۡسَ وَٱلۡقَمَرَ ڪُلٌّ۬ يَجۡرِى لِأَجَلٍ۬ مُّسَمًّ۬ىۚ ذَٲلِڪُمُ ٱللَّهُ رَبُّكُمۡ لَهُ ٱلۡمُلۡكُۚ وَٱلَّذِينَ تَدۡعُونَ مِن دُونِهِۦ مَا يَمۡلِكُونَ مِن قِطۡمِيرٍ

He merges the night into the day, and the day into the night. And He has subjected the sun and the moon; each runs its course for a term appointed. Such is Allah your Lord; His is the kingdom. And those whom you invoke instead of Him own not even a Qitmir (the thin membrane over the date-stone). [Fatir. 13]

Lessons on Day, Night, Sun, and Moon

Allah merges the night into the day and the day into the night: one enters the other. Whenever one arrives the other disappears- one increases and the other decreases, then balance is achieved. Through this, people attain welfare for their bodies, animals, trees and vegetations. Also, Allah subjugated the sun and the moon: the sun a shinning thing with heat, the moon a light, their movements and disappearance, thus the people may disperse to seek His bounty [i.e. livelihood], as well as what they [i.e. the sun and moon] facilitate to make the fruits ripe and others become dry due to the sun’s heat, and other necessities whose absence would have brought harm to the people.

[كُلٌّ۬ يَجۡرِى لِأَجَلٍ۬ مُّسَمًّ۬ىۚ – Each (sun and moon) runs its course for a term appointed].

Meaning, the sun and the moon run their course for a period by the will of Allah, but they will cease when the end of the world arrives, the ability given to them to do what they do will stop: the moon will eclipse, the sun will wound round and lost its light and overthrown, and the stars will fall. [1]

In his explanation of Surah Al-Asr, Imam Ibn Al-Qayyim, may Allah have mercy upon him, said:

Allah made an oath by “(the phenomenon of) time” because it is the period in which moral lessons and signs occur, and because the alternation of night and day under the Decree of the All-Mighty, the All-Knowing are organised to serve the welfare of the universe based on the most perfect order and organisation – alternating with one another, sometimes not much difference between them and at other times one takes from the hours of the other, the difference between the light, the darkness, the heat, and the cold, and the different periods divided into generations, years, months, days, hours and what is lesser than that! These are all signs (creations) of the Lord, The Most High- a Burhaan [proof that clarifies and distinguishes between truth and falsehood in everything] and proofs regarding Allah’s All-Encompassing Perfect Ability and Wisdom, free is Allah from all imperfections, faults, deficiencies, shortcomings. [2]

On Absolute Dominion

ذَٲلِڪُمُ ٱللَّهُ رَبُّكُمۡ لَهُ ٱلۡمُلۡكُۚ

Such is Allah your Lord; His is the kingdom.

• He alone created and subjugated these things for humankind.

• He alone has the right to be worshipped; to Him belongs absolute dominion.

وَٱلَّذِينَ تَدۡعُونَ مِن دُونِهِۦ مَا يَمۡلِكُونَ مِن قِطۡمِيرٍ

Those you invoke instead of Him do not own even the smallest thing, not even the thin membrane over a date stone.

This highlights the futility of worshipping idols or deified images. [3]

On Invoking False Deities

إِن تَدۡعُوهُمۡ لَا يَسۡمَعُواْ دُعَآءَكُمۡ وَلَوۡ سَمِعُواْ مَا ٱسۡتَجَابُواْ لَكُمۡۖ وَيَوۡمَ ٱلۡقِيَـٰمَةِ يَكۡفُرُونَ بِشِرۡڪِكُمۡۚ وَلَا يُنَبِّئُكَ مِثۡلُ خَبِيرٍ۬

If you invoke them, they hear not your call. Even if they could hear, they could not grant your request. On the Day of Resurrection, they will disown your worship. And none can inform you like Him Who is All-Knower. [Fatir. 14]

[سُبۡحَـٰنَكَ أَنتَ وَلِيُّنَا مِن دُونِهِمۖ- Glorified be You (Allah)! You are our Wali (Lord) instead of them (Surah Sabah, Ayah 41)]. [4][وَلَا يُنَبِّئُكَ مِثۡلُ خَبِيرٍ  – And none can inform you (O Muhammad) like Him Who is the All-Knower (of each and everything)]- Meaning, the knower of everything by Himself. [5]

[1] As-Sa‘di

[2] https://salafidawahmanchester.com/2025/12/22/the-summit-of-human-potential-four-defining-qualities/

[3] Sadi

[4] Sadi

[5] Zad Al-Maseer Fee Ilm at-Tafseer By Imam Ibn Al-Jawzi