The Quran

لِتَستَووا عَلىٰ ظُهورِهِ ثُمَّ تَذكُروا نِعمَةَ رَبِّكُم إِذَا استَوَيتُم عَلَيهِ وَتَقولوا سُبحانَ الَّذي سَخَّرَ لَنا هٰذا وَما كُنّا لَهُ مُقرِنينَ

Muhammad Asad

in order that you might gain mastery over them,¹ and that, whenever you have mastered them, you might remember your Sustainer's blessings and say: "Limitless in His glory is He who has made [all] this subservient to our use - since [but for Him,] we would not have been able to attain to it.

Lit., "over its backs" i.e., according to all classical commentators, the "backs" of the above-mentioned animals and ships alike, the singular form of the pronoun ("its") relating to the collective entity comprised in the concept of "all whereon you ride" (ma tarkabun): in other words, "all that you use or may use by way of transport". As regards my rendering of li-tasta'u as so that you might gain mastery", I should like to point out that the verb istawa (lit., "he established himself") has often the connotation adopted by me: see Jawhari, Raghib and Lisan al-'Arab, art. sawa; also Lane IV, 1478.