ٱلدُّخَان : ٧

  • رَبِّ Lord
  • ٱلسَّمَٰوَٰتِ (of) the heavens
  • وَٱلۡأَرۡضِ and the earth
  • وَمَا and whatever
  • بَيۡنَهُمَآۖ (is) between both of them
  • إِن if
  • كُنتُم you
  • مُّوقِنِينَ would be certain
Lord of the heavens and the earth and that between them, if you would be certain.
Lord of the skies and the earth and all that is between them (read rabbu'l-samaawaati, in the nominative [to understand it] as a third predicate; or read rabbi'l-samaawaati as a substitution for rabbika, 'your Lord'), if you should be certain, O people of Mecca, that God, exalted be He, is the Lord of the skies and the earth, then also be certain that Muhammad may peace and salutation be upon him is His Messenger.