أُفُق

وَهُوَ بِٱلْأُفُقِ ٱلْأَعْلَىٰ

While he was in the higher [part of the] horizon.

وَلَقَدْ رَءَاهُ بِٱلْأُفُقِ ٱلْمُبِينِ

And he has already seen him [i.e., Gabriel] in the clear horizon.

سَنُرِيهِمْ ءَايَـٰتِنَا فِى ٱلْـَٔافَاقِ وَفِىٓ أَنفُسِهِمْ حَتَّىٰ يَتَبَيَّنَ لَهُمْ أَنَّهُ ٱلْحَقُّ ۗ أَوَلَمْ يَكْفِ بِرَبِّكَ أَنَّهُۥ عَلَىٰ كُلِّ شَىْءٍۢ شَهِيدٌ

We will show them Our signs in the horizons and within themselves until it becomes clear to them that it is the truth. But is it not sufficient concerning your Lord that He is, over all things, a Witness?