Surah 16. An-Nahl, Ayah 3

I.e., in accordance with a meaning and a purpose known only to Him. See also 10:5 and, in particular, the corresponding note [11].

This repetition of part of verse {1} is meant to stress the uniqueness of God's creative powers.

Not for sport, or fortuitously and without Design. Cf. xv. 85. Surely the Unity of Design in Creation also proves the Unity of Allah their Creator.