43:13
لِتَسْتَوُۥا۟ عَلَىٰ ظُهُورِهِۦ ثُمَّ تَذْكُرُوا۟ نِعْمَةَ رَبِّكُمْ إِذَا ٱسْتَوَيْتُمْ عَلَيْهِ وَتَقُولُوا۟ سُبْحَٰنَ ٱلَّذِى سَخَّرَ لَنَا هَٰذَا وَمَا كُنَّا لَهُۥ مُقْرِنِينَ
That you may settle yourselves upon their backs and then remember the favor of your Lord when you have settled upon them and say. "Exalted is He who has subjected this to us, and we could not have [otherwise] subdued it.
Translation · Saheeh International
Tafsir
Ibn Kathīr (abridged)
The Idolators' admission that Allah is the Sole Creator, and Further Evidence of that
Allah says: `If you, O Muhammad, were to ask these idolators who associate others with Allah and worship others besides Him,'
مَّنْ خَلَقَ السَّمَـوَتِ وَالاٌّرْضَ لَيَقُولُنَّ خَلَقَهُنَّ الْعَزِيزُ الْعَلِيمُ
("Who has created the heavens and the earth" They will surely say: "The All-Mighty, the All-Knower created them.") In other words, they will admit that the Creator of all that is Allah Alone, with no partner or associate, yet they still worship others -- idols and false gods -- alongside Him.
الَّذِى جَعَلَ لَكُمُ الاٌّرْضَ مَهْداً
(Who has made for you the earth like a bed,) means, smooth, stable and firm, so that you can travel about in it, and stand on it and sleep and walk about, even though it is created above water, but He has strengthened it with the mountains, lest it should shake.