يُولِجُ الَّيْلَ فِى النَّهَارِ وَيُولِجُ النَّهَارَ فِى الَّيْلِ وَسَخَّرَ الشَّمْسَ وَالْقَمَرَ كُلٌّ يَجْرِى لاًّجَلٍ مُّسَمًّى ذَلِكُمُ اللَّهُ رَبُّكُمْ لَهُ الْمُلْكُ وَالَّذِينَ تَدْعُونَ مِن دُونِهِ مَا يَمْلِكُونَ مِن قِطْمِيرٍ - إِن تَدْعُوهُمْ لاَ يَسْمَعُواْ دُعَآءَكُمْ وَلَوْ سَمِعُواْ مَا اسْتَجَابُواْ لَكُمْ وَيَوْمَ الْقِيَـمَةِ يَكْفُرُونَ بِشِرْكِـكُمْ وَلاَ يُنَبِّئُكَ مِثْلُ خَبِيرٍ
13. He merges the night into the day, and He merges 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 or call upon instead of Him, own not even a Qitmir. 14. If you invoke them, they hear your call; and if (in case) they were to hear, they could not grant it to you. And on the Day of Resurrection, they will disown your worshipping them. And none can inform you like Him Who is the All-Knower. Another aspect of His perfect power and might is that He has subjugated the night with its darkness and the day with its light. He takes from the length of the one and adds it to the shortness of the other, until they become equal. Then He takes from the latter and adds to the former, so one becomes long and the other becomes short, so they take from one another in summer and in winter.