39:22
أَفَمَن شَرَحَ ٱللَّهُ صَدْرَهُۥ لِلْإِسْلَٰمِ فَهُوَ عَلَىٰ نُورٍۢ مِّن رَّبِّهِۦ ۚ فَوَيْلٌۭ لِّلْقَٰسِيَةِ قُلُوبُهُم مِّن ذِكْرِ ٱللَّهِ ۚ أُو۟لَٰٓئِكَ فِى ضَلَٰلٍۢ مُّبِينٍ
So is one whose breast Allah has expanded to [accept] Islam and he is upon a light from his Lord [like one whose heart rejects it]? Then woe to those whose hearts are hardened against the remembrance of Allah. Those are in manifest error.
Translation · Saheeh International
Tafsir
Ibn Kathīr (abridged)
The Parable of the Life of this World
Allah tells us that water originates in the sky. This is like the Ayah:
وَأَنزَلْنَا مِنَ السَّمَآءِ مَآءً طَهُوراً
(and We send down pure water from the sky) (25:48). So, Allah sends down water from the sky, and it settles in the earth, then He causes it to flow wherever He wills, and He causes springs, great and small, to flow as needed. Allah says:
فَسَلَكَهُ يَنَابِيعَ فِى الاٌّرْضِ
(and causes it to penetrate the earth, as water springs,) Sa`id bin Jubayr and `Amir Ash-Sha`bi said that all the water on earth has its origins in the sky. Sa`id bin Jubayr said, its origins lie in the snow, meaning that snow piles up in the mountains, then settles at the bottom (of the mountains) and springs flow from the bottom of them.