S25
The protected roof
"And We made the sky a protected ceiling, but they, from its signs, are turning away" (21:32): the verse calls the sky a roof that is kept safe, and complains that people do not look.
وَجَعَلْنَا ٱلسَّمَآءَ سَقْفًا مَّحْفُوظًا ۖ وَهُمْ عَنْ ءَايَٰتِهَا مُعْرِضُونَ٣٢
Transliteration: wajaʿalnā l-samāa saqfan maḥfūẓan wahum ʿan āyātihā muʿ'riḍūna
And We made the sky a protected ceiling, but they, from its signs, are turning away.
ٱلَّذِى جَعَلَ لَكُمُ ٱلْأَرْضَ فِرَٰشًا وَٱلسَّمَآءَ بِنَآءً وَأَنزَلَ مِنَ ٱلسَّمَآءِ مَآءً فَأَخْرَجَ بِهِۦ مِنَ ٱلثَّمَرَٰتِ رِزْقًا لَّكُمْ ۖ فَلَا تَجْعَلُوا۟ لِلَّهِ أَندَادًا وَأَنتُمْ تَعْلَمُونَ٢٢
Transliteration: alladhī jaʿala lakumu l-arḍa firāshan wal-samāa bināan wa-anzala mina l-samāi māan fa-akhraja bihi mina l-thamarāti riz'qan lakum falā tajʿalū lillahi andādan wa-antum taʿlamūna
[He] who made for you the earth a bed [spread out] and the sky a ceiling and sent down from the sky, rain and brought forth thereby fruits as provision for you. So do not attribute to Allah equals while you know [that there is nothing similar to Him].
Translation: Saheeh International
Meccan, in a run of signs after 21:30–31.
"[He] who made for you the earth a bed [spread out] and the sky a ceiling and sent down from the sky, rain and brought forth thereby fruits as provision for you. So do not attribute to Allah equals while you know [that there is nothing similar to Him]" (2:22), Medinan, among the first commands of Sura al-Baqara.
Key words
Saqf: ceiling, roof. Maḥfūẓ: "protected", guarded, preserved.
See also: 15:16–18
Classical tafsir
Ibn Kathir. "Protected" means "high and protected from anything reaching it"; Mujahid: "Raised up." On the end of the verse: "Yet they turn away from its signs."
Al-Jalālayn. "a roof for the earth functioning like the roof of a house preserved from collapsing".
Tanwīr al-Miqbās. It reads the protection as protection from devils (as reported on the surahquran page; the wording was not quoted).
Where they differ. Three meanings of "protected": out of reach (Ibn Kathir), kept from falling (al-Jalālayn), and guarded from devils (Tanwīr al-Miqbās). None mentions radiation or the atmosphere's layers.
How it works
- ultraviolet light: the ozone layer absorbs it
- solar wind: the magnetic field turns it aside
- meteors burn up in the air
Text version
The ozone layer absorbs much of the Sun's ultraviolet light. Earth's magnetic field keeps solar plasma away from the surface. Most small meteoroids burn up high in the atmosphere as "shooting stars". The drawing is not to scale.
Each point is tied to "protected ceiling".
- The ozone layer. Established "the ozone layer is a special region of the atmosphere that absorbs much of this radiation" — the Sun's ultraviolet light (Cain, Universe Today).
- The magnetosphere. Established Earth's magnetic field protects us from solar plasma, "keeping it safely away from the surface of the planet" (Cain).
Points of awe
The ozone layer absorbs much of the Sun's harmful ultraviolet light (Cain).
Earth's magnetic field keeps solar plasma away from the surface (Cain).
Reflection
A roof is something you only think about when it leaks. The verse asks us to think about the sky that way: "And We made the sky a protected ceiling, but they, from its signs, are turning away" (21:32).
The commentators each saw a different protection. Ibn Kathir: high, beyond anything's reach. Al-Jalālayn: a roof "preserved from collapsing", like the roof of a house. Another early reading: guarded from devils who would listen in. In every reading, the sky is kept for us.
The complaint at the end is the real point. The roof is there, every day, and people "are turning away" from its signs. Ibn Kathir: they do not think about how it was made, "so vast and high".
Today we can add, as reflection, protections the first listeners could not see: a thin layer of ozone that absorbs much of the Sun's ultraviolet light, and a magnetic field that holds solar plasma away from the ground. They are invisible until we learn about them — and then, like a good roof, they are easy to forget again. The verse's call is simply to look up, and not to turn away.
Questions readers ask next
What does "protected ceiling" mean?
High and out of reach (Ibn Kathir), kept from falling (al-Jalālayn), guarded from devils (Tanwīr al-Miqbās).
Does the verse describe the ozone layer?
No; that is a modern reflection on the image.
Why does the verse say people "turn away" from its signs?
Because they do not reflect on how the sky was made (Ibn Kathir).
Sources
- Saheeh International — 21:32, 2:22.
- Ibn Kathir, Tafsir (abridged English), Tafsīr al-Jalālayn (English) and Tanwīr al-Miqbās, on 21:32, https://surahquran.com/tafsir-english-aya-32-sora-21.html.
- Fraser Cain, "How Does the Earth Protect Us From Space?", Universe Today (13 February 2009), https://universetoday.com/25370/how-does-the-earth-protect-us-from-space.
- NASA StarChild, "Meteoroids"
- NASA and NOAA overviews of the ozone layer and magnetosphere
- Ibn Kathīr and al-Qurṭubī on 21:32