Surah Ar-Ra'd
أَنزَلَ مِنَ ٱلسَّمَآءِ مَآءً فَسَالَتْ أَوْدِيَةٌۢ بِقَدَرِهَا فَٱحْتَمَلَ ٱلسَّيْلُ زَبَدًا رَّابِيًا ۚ وَمِمَّا يُوقِدُونَ عَلَيْهِ فِى ٱلنَّارِ ٱبْتِغَآءَ حِلْيَةٍ أَوْ مَتَـٰعٍ زَبَدٌ مِّثْلُهُۥ ۚ كَذَٰلِكَ يَضْرِبُ ٱللَّهُ ٱلْحَقَّ وَٱلْبَـٰطِلَ ۚ فَأَمَّا ٱلزَّبَدُ فَيَذْهَبُ جُفَآءً ۖ وَأَمَّا مَا يَنفَعُ ٱلنَّاسَ فَيَمْكُثُ فِى ٱلْأَرْضِ ۚ كَذَٰلِكَ يَضْرِبُ ٱللَّهُ ٱلْأَمْثَالَ
Anzala minas-samā'i mā'an fa sālat audiyatum biqadarihā faḥtamalas-sailu zabadar rābiyā(n), wa mimmā yūqidūna ‘alaihi fin-nāribtigā'a ḥilyatin au matā‘in zabadum miṡluh(ū), każālika yaḍribullāhul-ḥaqqa wal-bāṭil(a), fa ammaz-zabadu fa yażhabu jufā'ā(n), wa ammā mā yanfa‘un-nāsa fa yamkuṡu fil-arḍ(i), każālika yaḍribullāhul-amṡāl(a).
He sends down from the sky, rain, and valleys flow according to their capacity, and the torrent carries a rising foam. And from that [ore] which they heat in the fire, desiring adornments and utensils, is a foam like it. Thus Allah presents [the example of] truth and falsehood. As for the foam, it vanishes, [being] cast off; but as for that which benefits the people, it remains on the earth. Thus does Allah present examples.