Surah Az-Zukhruf 43:13

لِتَسْتَوُۥا۟ عَلَىٰ ظُهُورِهِۦ ثُمَّ تَذْكُرُوا۟ نِعْمَةَ رَبِّكُمْ إِذَا ٱسْتَوَيْتُمْ عَلَيْهِ وَتَقُولُوا۟ سُبْحَـٰنَ ٱلَّذِى سَخَّرَ لَنَا هَـٰذَا 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

that you may sit that you may find a firm position upon their backs He has made the suffixed pronoun a masculine plural and rendered zahr ‘back’ plural because of the particle mā and its plural import; …

Excerpt from Tafsir al-Jalalayn, commentary on 43:13, via Quran.com. The reader has the full commentary and 9 more tafsirs.