And if wa-la-in the lām is for oaths you ask them ‘Who created the heavens and the earth?’ they will surely say the indicative nūn has been omitted because of the other nūn coming after it and likewise the wāw replaced by the damma in -lunna because of two unvowelled consonants coming together ‘The Mighty the Knower created them’ — this would have to be their eventual response that is to say God created them Lord of Might and Knowledge. God exalted be He adds